Data4Life help center

All you need to register for an account is the following:

• Your email address
• A password which you choose
• Your phone number for two-factor authentication

Note: We only store your email address and your phone number. The password you chose isn't stored by us but is stored encrypted on your device.

Important: We ask for your mobile number to send you a code and confirm it’s really you signing in. This is called two-factor authentication and protects your data.
We never call you or share your number with anyone.

Related topics

See How do I create a user account?

Nobody except you can access your personal information because we always store your data encrypted. If you decide to share your data with your doctor, you can export your health information.

• As a PDF file, for example, your symptom history in the symptom tracker.

We store your data and documents exclusively on servers within Germany and always encrypted. Only you have access to the content of your data.

Data4Life is certified by the German Federal Office for Information Security (BSI) as ISO 27001 compliant
on the basis of "IT-Grundschutz".

Besides many other measures to protect your privacy, we use end-to-end encryption (E2EE) for all health data.

End-to-end encryption ensures that only you can access the content of the encrypted data. Even Data4Life cannot understand the encrypted data since we don't have access to the cryptographic keys needed to decrypt the data. This means that we never have access to the content.

Personal data is encrypted on your personal device – mobile device or desktop computer – and can only be decrypted by you. You're in control and can decide if you want to explicitly grant access, for example, to your doctor.

Pseudonymization is a method of altering data so that it can't be linked to you without the use of additional information.

Pseudonymization works, for example, by replacing identifying information, such as your name, email address, and phone number, with a unique random number (the pseudonym). Your identity is therefore protected.

To help protect your data privacy, the app uses two-factor authentication (2FA), also called 2-step verification.
Two-factor authentication is a process where during sign-in, we ask you for an additional form of identification.

This second factor of authentication increases security because an attacker would need access to your phone, as well as your email address and password, to access your account.

Two-factor authentication uses the following:

• Something you know: your password
• Something you have: your phone or tablet

Note: Two-factor authentication is always active and can't be switched off.

When you log in, the app asks you for the following:

• Your email address and password
• The verification code that we send to your phone by SMS

Two-factor authentication is the reason why we ask for your phone number when you create your user account. If we can send verification codes to your personal phone by SMS, that's another layer of security for your account and your data.

Related topics

See Why do you send me SMS codes?

The auth.data4life.care website handles secure account creation and login services at Data4Life. Banking apps and healthcare apps often use a separate service with its own web address to provide secure access to your personal information.

You're redirected to auth.data4life.care when you choose Sign in or Create account on the start dialog.

Related topics

See What is two-factor authentication?

See Which information do you save during my registration?

See How do I create a user account?

Our digital solutions are not a medical device. They neither offer nor replace medical advice, diagnostic services, or the monitoring and treatment of diseases.

Important: If you’re concerned about your health, please seek help from a doctor.

We'd love to hear from you. Your feedback helps us improve our digital solutions for all users.

Please get in touch by sending a message to feedback@data4life.care.

To send feedback from within your Data4Life account:

1. Go to the menu .
2. Choose Give feedback.
3. On the Improving the app for you screen, enter your feedback.
4. Optional: If you select the checkbox, we can get back to you by email about your feedback.
5. Choose Send feedback.

The app is free with no adverts or subscription fees.

Note: The app requires an internet connection. Additionally, you must be able to receive SMS messages for authentication. Your mobile service provider may charge you for data use.

You must be at least 16 years old at the time of registration and be capable of giving consent for our services. See our terms of use.

Web Supported browsers for the web app:

• Apple Safari

• Google Chrome

• Microsoft Edge

• Mozilla Firefox

• Opera

Important: Older browser versions can sometimes not be supported for data security reasons. The web app works best with a current browser version.

Required browser settings

• Browser must not be set to "Block all cookies".
• For Firefox, Private Browsing is not supported.
• JavaScript must be activated.

Tip: It's easiest to create your user account on a desktop computer.

Prerequisite: Your browser meets the software requirements.

Your registration process has the following steps:

• Create your user credentials (email address and password)
• Verify your email address
• Provide your mobile phone number for two-factor authentication

To create a user account:

1. Go to https://app.data4life.care/corona/ or to https://app.data4life.care/library/

2. On the Start dialog, choose Create account.

3. Enter your email address.

4. Create your password and confirm it.

5. Select the Health data processing checkbox to give consent to the processing of your data.

6. Choose Next.
   We send you an activation email.

7. Go to your email inbox and click on the Verify email address link in the email.
   A success message is displayed.

Your account is now set up and you can log in.

To log in for the first time:

1. On the Start dialog, choose Sign in.

2. Enter your mobile phone number so we can send you an SMS message with a verification code for logging in.
   Note: We only use your mobile number to securely log you in. We don't share the number with anyone else.

3. Choose Next.

4. Enter your verification code from the SMS, then choose Confirm.
   You have successfully logged in and you can start working with the app.

Note: Ensure that the Remember this device checkbox is selected when you enter the verification code from the SMS. Then you don't have to enter the information for the next login on the device.

No. Only one user account may be maintained per person. See our terms of use.

To help protect your health data, create a complex password for your user account. You should always use different passwords for your important accounts, like email, online banking, social media, and health information.

Your password for the app must meet the following requirements:

• 8 characters or more
• At least 1 numeric character (0-9)
• At least 1 special character (! " # $ % ' ( ) * + , - . / : ; < = > ? @ [ \ ] ^ _ ` { | } ~)
• Mix of uppercase and lowercase letters (A-Z, a-z)

Tip: The best passwords are randomly generated ones like x7fbjsBAEZyF@,Z$. To create random passwords, you can use password managers.

Password managers can do the following for you:

• Generate strong passwords
• Store passwords
• Autofill passwords when you log in to websites and web apps

To help you protect your user account and your data privacy, the app runs a password check when you create your user account. The check is an extra step after ensuring that your password meets our complexity requirements.

Important: The password check can detect if your password was compromised in a previous data leak on the internet. Such compromised passwords are considered unsafe and should be changed.

Related topics

See How do I create a strong password?

See HPI Identity Leak Checker

See Check if you have an account that has been compromised in a data breach

The recovery key is a personal code that helps to protect your account. If you ever forget your password, or want to change it, you need your recovery key.

The key is like a backup password, similar to the personal unlocking key (PUK) of your phone.

The key can have 2 formats:

• 16 blocks of numbers and letters
• 12 unrelated English words

Creating a recovery key is optional, but highly recommended.
Store your recovery key in a safe and private place that you can access without a computer.

Important: If you don’t have a recovery key, and you forget your password, you'll permanently lose access to your account and your data.

We can’t help you reset your password without your recovery key because we use end-to-end encryption to keep your account protected and private.

Related topics

See How do I save my recovery key?

See I saved my recovery key. But where?

Important: When you create your user account, ensure that you store your personal recovery key somewhere safe. Make a printout so you can access the key without a computer or mobile device.

Android / Web To save your recovery key on your Android device or on your computer:

Prerequisite: You've taken the first steps to create your user account.

• In the third step, under the Your recovery key field, tap or click DOWNLOAD RECOVERY KEY.
  A confirmation message is displayed.

By default, your recovery key is saved in your Downloads folder in the data4life-recoveryKey.pdf file.

iOS To save your recovery key on your iOS device:

Prerequisite: You've taken the first steps to create your user account.

1. In the third step, under the Your recovery key field, tap or click Copy to clipboard.
   A confirmation message is displayed.

2. Paste the recovery key to a safe place where you can find it again.

Related topics

See What is the recovery key?

See I saved my recovery key. But where?

Two-factor authentication is the reason why we ask for your phone number when you create your user account. If we can send verification codes to your mobile phone by SMS, that's another layer of security for your account and your data.

We only use your phone number for two-factor authentication and don't share it with anyone else.

Note: Two-factor authentication is always active and can't be switched off.

Related topics

See What is two-factor authentication?

See Why do you send me SMS codes?

Prerequisite: You've created your user account.

To log in to your user account:

1. On the Welcome dialog, choose Start now.

2. On the Start dialog, choose Sign in.

3. Enter your email address and your password.

4. Choose Sign in.

To sign out of your account:

1. Go to My account .

2. Choose Sign out.

To change your email address:

1. Go to My account .

2. Choose Account settings,

3. In the Email address field, tap or click your address and edit it.

4. Choose Save changes.

We send a confirmation message to your new email address.

Your mobile phone number helps protect your data privacy because the app uses two-factor authentication.

Important: To protect your user account, the process of changing your telephone number involves several steps to verify your identity. These steps take some time.

To change the phone number associated with your user account, please get in touch with our support team.

Send the support team your old phone number to initiate the next steps to make the change.

Prerequisite: You have access to your personal recovery key.

To change your password:

1. On the login dialog, choose Forgot password?

2. On the Reset your password dialog, enter the email address that you use for your user account.

3. Enter your personal recovery key.

4. Create and confirm your new password.

Related topics

See What is the recovery key?

See How do I store my recovery key?

See I saved my recovery key. But where?

Important: These steps download your data in a technical file format that isn't optimized for sharing with a doctor. To share your recorded symptoms with your doctor in PDF format, see How do I share symptom information with my doctor?

Web You can export and download all your data together in one ZIP file.

To download your data:

1. Go to My account .

2. Choose My data.

3. Under Export data, choose the Download button.

The download to your device can take several minutes. Your data is stored in a ZIP file with the name my-data.zip.

You delete your data by deleting your user account.

Related topics

See How do I delete my user account?

See How do I delete my user account even though I can't access it?

Prerequisite: You have access to your user account. Otherwise, see How do I delete my user account even though I can't access it?

Web To delete your user account:

Important: Deleting your user account deletes all your data on our platform.

1. Go to My account .

2. Choose Account settings.

3. Under Delete account, choose the Delete account button.

4. On the Are you sure you want to close this account? dialog, choose Delete account.

Note: Deleting your user account might take several minutes.

If you want to delete your user account but have lost access to it, please get in touch with Customer Care.

Customer Care uses your email address to find the related information and initiate the next steps to authenticate you.

If the authentication is successful, Customer Care deletes your user account.

Important: Deleting your user account deletes all your data on our platform and can't be reversed.

Your account ID is an identifier with blocks of numbers and letters and looks like this: 8f621150-b9ed-4a15-b181-738908a4ff68.

When you have issues with your account, your account ID helps our support team analyze and troubleshoot.

To find your account ID

1. Go to My account .

2. Choose Account settings.

3. Your Account ID is displayed with an option to copy the ID to your clipboard.

If you want to withdraw your consent, please delete your user account.

Related topics

See How do I delete my user account?

See How do I delete my user account even though I can't access it?

To help protect your user account, the app uses two-factor authentication. To log in, you must provide the following information:

• Your email address and your password
• The verification code we send you by SMS

iOS In iOS 12 or later, you can automatically enter SMS verification codes by using AutoFill (Settings > Passwords & Accounts > AutoFill Passwords).

Note: The verification code expires after 10 minutes but you can request a new one.

To request a new SMS code:

• On the Enter verification code dialog, choose the Resend SMS button.

Note: Ensure that the Remember this device checkbox is selected when you enter the verification code from the SMS. Then you don't have to enter the code for the next login on the device.

Our email newsletter informs you about Data4Life, our partners, and developments in health.

To subscribe or unsubscribe from the newsletter, you have the following options:

• Web Go to menu > My account > Preferences > Email newsletter > Make your selection.

• In the newsletter, in the email footer, choose the Unsubscribe link.

• Send a message to we@data4life.care and include "unsubscribe" in the subject line or in the message body.

Web The texts in the web app are displayed in the language of your browser and operating system. You can change the language.

Note: If the web app isn't available in your language, English is the default.

To change the language in the web app:

Prerequisite: Your browser is configured to accept cookies.

1. In the app, go to My account .

2. Choose User preferences.

3. At the top left, under Language, select your language.

To change the language before you log in:

• At the top-right of the screen, use the DE / EN language switch.

Tip: To easily access your study or diary, you can add the web app to your Home screen. Then you can run the web app like a mobile app.

Android To add the icon to the Home screen on your Android phone (Chrome browser)

1. On your Android device, open the Chrome app.

2. Enter the web address of a Data4Life web app, for example, the eCOV study.

3. Tap the vertical More icon (⋮).

4. Tap Add to home screen.

5. Tap Add.

6. Follow the instructions on the screen to place the icon.

The Data4Life app is displayed on your Home screen like a Smartphone app.

iOS To add the icon to the Home screen on your iOS phone (Safari browser)

1. On your iPhone, open the Safari app.

2. Enter the web address of a Data4Life web app, for example, eCOV study.

3. Tap the Share button.

4. Scroll down and tap Add to Home Screen.

5. Enter a name for the app, then tap Add.

The Data4Life app is displayed on your Home screen like a Smartphone app.

Enabling the Keep me signed in option on the login dialog gives you longer access to your user account. The option extends your session duration and the time until you have to sign in again.

By default, you're signed out of the app after 15 minutes of inactivity.

Important: Don't use the Keep me signed in option on public or shared computers.

Note: The setting works per browser and per device. If you sign in with another browser or from another device, you have to sign in again.

To enable Keep me sign in:

• On the Sign-in dialog, select the Keep me logged in checkbox.

To disable Keep me signed in:

1. Log out of the app (My Account > Sign out).

2. On the welcome dialog, choose the Sign in button.

3. On the sign-in dialog, clear the Keep me signed in checkbox.

4. Sign in again.

Your health information helps the research community gain insights on how to better prevent, diagnose, and treat diseases.
You can take part in research studies on your mobile device or your home computer.

Here's an overview of the steps to participate in a research study using your Data4Life account:

1. To easily answer the questionnaires on your phone, tablet, or computer and to keep your health data secure, create a Data4Life account.

2. Go to the website of the research study.

3. Log in to your Data4Life account.

4. Optional: If you're entering an invite-only study, enter your participation code to join.

5. Once you're enrolled, you can start answering study questions digitally in your Data4Life account. We send you email notifications when new questions are available for you.

We're looking forward to your participation.

All information in your Data4Life account is private and always encrypted.

Before researchers see your answers to the study questions, we remove all personal identifiers, for example, name, email address, and phone number. This step, called pseudonymization, makes data useful for research without disclosing your identity.

There are 2 types of studies:

• Open studies – Everyone can participate.

• Closed studies – Participants need an invitation, for example, from their doctor or a research organization.

This study is for everyone over 16 years old:

• eCOV – COVID-19 study on vaccinated and unvaccinated persons over 16 to better understand the impact of COVID-19 vaccines.
  Find out more and join: https://www.data4life.care/en/what-we-do/individuals-and-families/studies/ecov/

In the eCOV study, the Data4Life research team is working to evaluate how effective COVID-19 vaccines are in real life and to what extent tests help detect infections at an early stage. Help us get answers to the following questions:

• How effective are COVID-19 vaccines in everyday life?

• How does vaccine effectiveness decline over time?

• Do vaccinated people have different COVID-19 symptoms?

• What are typical side effects of coronavirus vaccines?

• When and how often are booster vaccinations necessary?

Who can participate

The study is open to anyone age 16 and over.

Study participation is purely digital using your Data4Life account.

What to expect

To securely manage your data during the study, we first ask you to create a Data4Life account.

Next, you'll answer a one-time initial questionnaire. It consists of personal questions and general health questions and should only take about 5 minutes.

We notify you by email when follow-up questions are available. The questions shouldn't take longer than 2 minutes to answer.

The eCOV study runs for a total of 2 years, every answer can make a difference for research.

The questions cover the following topics:

• SARS-CoV-2 tests and symptoms, questions about your potential novel coronavirus (SARS-CoV-2) symptoms and tests

• Contact with others

• COVID-19 vaccinations

• COVID-19 vaccination side effects

• Coronavirus testing (on demand)

Join the eCOV study here

Related topics

See What is two-factor authentication?

See Which information do you save during my registration?

See How do I create a user account?

Web The research studies use questionnaires that are displayed in a web app in the browser on your computer or on your mobile device.
A download from an app store isn't needed.

Prerequisite: For closed studies, you must have a personal participation code which you enter during registration. The participation code is issued by the organization that conducts the study. You receive the participation code with your invitation together with the web address of the study.

To join a research study

1. Go to the start page of your study and choose the Get started button.

2. To securely manage your health data during the study, you must first create a user account.

3. After creating your user account, sign in with your username and password.

4. Enter the security code that we send to your phone by SMS.

5. Optional: The first time, a disclaimer is displayed, choose I understand.

   You're now in your account on your To do tab which displays your tasks.

6. Choose the Enter participation code button.

7. On the Enter code to enroll dialog, enter your participation code and choose Verify code.

You're now enrolled in the study and you can start by answering the study's initial questionnaire.

Related topics

See Which studies are available?

Web To secure your personal health data during your study participation, we ask you to create a Data4Life user account. All your data is encrypted on your device and only transmitted with end-to-end encryption.

Creating a user account gives you the following advantages:

• You can easily access and answer your study questions from different devices. For example, on the go from your smartphone or at home on your computer.

• You can access other digital solutions by Data4Life, for example, the symptom tracker and the health library.

Related topics

See How do I create a user account?

See Trust and privacy

See Which information do you save during my registration?

The participation code is part of your invitation to a study.
Without participation code you can't join closed studies.

The code has 6 characters (letters and numbers) and looks like this example:

58ROJS

Note Some studies have 8-character participation codes.

Prerequisite You must first create a Data4Life user account before you can enter the participation code.

When you enter an incorrect participation code, an error message is displayed.
Try the following:

• Try again to check if you mistyped the code. The letters in the code are case-sensitive.

• Tip: If you received your code digitally, use copy and paste to enter the code.

• If you forgot your code, please get in touch with your study contact person.

• If you participate in several studies, maybe you used a code for the wrong study.

Leaving a study or program means:

• You won't receive any further notifications or questionnaires.
• You lose access to the study's information.
• Your answers from past questionnaires are still available for research.

Prerequisite: You've joined a study and are currently enrolled.

To leave a research study program

1. Go to My account .

2. Choose Preferences.

3. Under Participation, select your study.

4. On the Your privacy... dialog, choose the Withdraw consent button.

5. Confirm that you want to withdraw your consent and to delete your data. This step can't be undone.

Keep the Leaving program dialog open until the process is completed.

Prerequisite: You've created your user account. See How do I create a user account?

In the app, you enter your symptoms using a daily questionnaire with a checklist. The questionnaire only takes 1 minute per day.

Prerequisite: You've created your user account and you haven't entered symptoms in the past 24 hours.

To document your symptoms:

1. In the app, go to To do.

2. Under Symptom tracker, choose Start.

3. Optional: Choose Same symptoms as before if there are no changes.

4. Enter your symptoms in the checklist.

5. Choose Submit.

The Thank you dialog is displayed. When you go back to your History, your documented symptoms are displayed with date and time.

In the app, you enter symptoms using a questionnaire with a checklist. If you have symptoms that aren't included in the list, you can enter symptoms in a text field.

To enter symptoms that aren't in the symptom list:

Prerequisite: It's time to make your daily entry in the symptom tracker.

1. In the app, go to the symptom checklist.

2. Select the checkboxes to document your symptoms.

3. Under the list of symptoms, enter additional symptoms in the Other symptoms or notes field.

4. Choose Submit.

The History tab gives an overview of entries you made in the symptom tracker. You can edit the symptoms you entered.

To view and edit symptoms you've documented in the past:

1. In the app, go to the History tab.

2. Choose a day, then click or tap the (!) icon to display details.

3. In the Symptom tracker dialog, edit your documented symptoms.

4. Choose Submit and confirm your edits.

The app can send you reminders to enter your symptoms in the morning.

• Push notifications on your phone
• Email notifications if you're using the web app

Reminders are disabled by default. To manage reminders, go to your profile settings.

Android / iOS To change your settings for reminders:

1. In the app, go to My account .

2. Select or clear Push notifications - Symptom tracker daily reminders.

Web To change your settings for email reminders:

1. In the web app, go to My account .

2. Select or clear the Get a daily reminder to track my symptoms checkbox.

If you choose to receive reminders, the status is displayed in your timeline with an envelope symbol.

Web In the web app, you can export your symptom history to a PDF file as a summary and overview of your recorded symptoms. The PDF file also lets you easily share your symptom history with your doctor.

To export your symptom information:

1. Choose the Export symptom information icon to the right of the Profile icon.

2. On the Export PDF dialog, choose Create PDF in English or Create PDF in German.

A PDF file with an overview of your recorded symptoms is saved on your device.

• D4l-symptoms.pdf (English)
• D4l-symptome.pdf (German)

Android / iOS When you use the mobile app, you can track your symptoms without a Data4Life user account. All data is stored locally on your device.

Creating a user account gives you the following advantages:

• Your health data is encrypted and private on our platform, even if you lose your phone.

• You can easily access and edit your health information from different devices. For example, on the go from your smartphone or at home on your computer.

• Sharing with your doctor is easy, for example, by sharing a PDF file that contains your symptom summary.

Related topics

See How do I create a user account?

See Trust and privacy

The symptom tracker lets you document your coronavirus tests. The list helps if you're unsure which type of test you took.

Different types of tests are performed to detect infections with the novel coronavirus (SARS-CoV-2).

• PCR test
  You have a nose and throat swab at a test center. Afterwards, your samples are sent to a medical laboratory. After a few days, you receive your test result.

• Rapid antigen test
  You have a nose and throat swab and your sample is tested using a test strip. You receive your test result after a few minutes at the point of care.

• Antibody test
  A blood sample is taken. Antibody tests check your blood if you had a past infection.

We're here to help you. To get in touch with the Data4Life support team, send an email to help@data4life.care

Note: To help us solve your issue, please try to include the following information:

• What's the operating system of your device?
• What are you trying to do?
• What happens when you do x, then y?
• What do you see on the screen when you have the issue? Ideally, you can send a screenshot.

This helps us to better understand your problem. Thank you.

Important: Ensure that you don’t share private information in your screenshot file by mistake.

Issues with message delivery can have the following reasons:

Email delivery is slow
Sometimes it takes 10 minutes or more until the messages are delivered to your inbox. This sometimes happens for cloud-based mailbox service providers.

Tip: To receive a new verification email, try to log in again. An error message is displayed and a new email is sent to you with a new link.

Email message is in your spam folder
Check your spam folder.

Mistyped email address
Go back 1 step during account creation and check if you maybe have a spelling mistake.

When you create your user account, you must activate it using the Verify email address link in the email message we send you.

When the There was an error validating your email address message is displayed, the causes can be the following:

Too much time has passed since you received the email message
If the link in the email message expired, you can restart the registration process: To receive a new verification email, try to sign in. An error message is displayed and we send you a new email message with a new link.

You already activated your account
Try to sign in.

When you sign in, we sometimes send you a text message with a security code to ensure that it's really you signing in.

If you don't receive the text message, check the following:

• Your phone number is active and you have a network connection
• You've entered the correct country code for you phone
• You've entered the correct phone number

Important: When you enter your phone number after the country code, omit the leading 0. For example, enter "175" if your number begins with “0175”.

Note: For some cellular networks in the USA, we are experiencing outages. The text messages can't be delivered by SMS.

Related topics

See Why do you send me SMS codes?

See How do I change the phone number for my account?

See What is two-factor authentication?

After you enter an incorrect password too many times, you must wait for 5 minutes until you can try to log in again.

This is a setting to help protect your account.

Android / Web When you create your user account, you save your recovery key as a PDF file.

Prerequisite: To display your recovery key, you must have a PDF viewer installed.

By default, your key is saved here:

• Downloads folder
• data4life-recoveryKey.pdf file

Related topics

See What is the recovery key?

See How do I store my recovery key?

Your personal recovery key consists of 12 unrelated English words. For example:

art income kidney erosion punch dress
velvet crazy soccer trip fresh arch

If you're sure that you use the correct recovery key, issues during key entry can have the following causes:

When you manually enter your recovery key
Ensure that there's exactly 1 space between words. It's easy to misspell the key when you type in the words or have incorrect spaces.

When you copy and paste your recovery key from the PDF file
When you copy and paste your recovery key from your saved PDF file,
unwanted double spaces can be inserted. After you paste your recovery key, verify that there's exactly 1 space between words.

Maybe you have several recovery keys
If you had issues when you created your user account, you might have created 2 or more recovery keys in as many PDF files. The files are stored together. If you have several recovery key PDF files, enter the recovery keys to find the correct one.

Related topics

See What is the recovery key?

See How do I store my recovery key?

During account creation, a message is displayed:

• (i) It seems like you haven't downloaded or copied the recovery key. Be sure to complete this step before you finish your account creation.

The app checks if you've done one of the following:

• Downloaded the recovery key

• Copied the recovery key to your clipboard

If the app doesn't detect any of those, you can't proceed and the message is displayed.

Solution

Your recovery key is essential to protect your personal health data.

• Download the recovery key to your device, then print it out.

• Copy the recovery key to the clipboard, paste it into a document, then print it out.

Related topics

See What is the recovery key?

See How do I store my recovery key?

We send you a confirmation message when you change the password of your user account.

If you receive an email saying that your password has been changed, but you didn't change your password, your user account may have been compromised. And someone else might have access to your account.

To protect your user account:

1. Change your password by following the steps to reset your password.

2. Send an email to help@data4life.care to inform us about the issue.

Once we receive your email, Customer Care can investigate the changes to your user account.

We send a confirmation message when you change the email address registered to your user account.

If you receive an email saying that your email address has been changed, but you didn't change your email address, your user account may have been compromised. And someone else might have access to your account.

To protect your user account:

1. Change your password by following the steps to reset your password.

2. Send an email to help@data4life.care to inform us about the issue.

Once we receive your email, Customer Care can investigate the changes to your user account.

Prerequisite: You have access to your personal recovery key.

Important: If you forget your password, you reset it by creating a new one. Because we use end-to-end encryption and don't know your password, we can't help by sending you a reset link. You must reset your password yourself using your personal recovery key.

To create a new password:

1. On the login dialog, choose Forgot password?

2. On the Reset your password dialog, enter the email address that you use for your user account.

3. Enter your personal recovery key.

4. Create and confirm your new password.

Related topics

See What is the recovery key?

See How do I store my recovery key?

See I saved my recovery key. But where?

Prerequisite: You're using a supported browser for the web app.

To delete cookies, site data, and cached images and files from your browser, follow the instructions at the following links:

• Apple Safari (Mac), Apple Safari (iOS)
• Google Chrome
• Microsoft Edge
• Mozilla Firefox
• Opera

Tip: To solve browser problems, you may need to delete all cookies, site data, and cached images and files, then restart your browser.

A cookie is information stored on your computer by a website you visit.

Prerequisite: You're using a supported browser for the web app.

To accept cookies in your browser, follow the instructions at the following links:

• Apple Safari (Mac), Apple Safari (iOS)
• Google Chrome
• Microsoft Edge
• Mozilla Firefox
• Opera

Tip: To solve problems with the app, you may need to accept cookies or change certain browser modes and settings.

Data4Life sends you a verification email when you create your account. When you use your app, you get optional notification and reminder emails.

To ensure that these emails don't land in your spam folder, add the no-reply@data4life.care sender email address to your contacts.

Prerequisite: You're participating in the FeMFit study.

Issue

On some days, your Data4Life account receives no data from your Fitbit device.

Solution

Please regularly open your Fitbit app and ensure that your Fitbit device is synchronized with your Fitbit account.

More info about Fitbit device sync issues: Fitbit Help