diff --git a/FAQ.md b/FAQ.md
index 50d9b438a5..1094420ace 100644
--- a/FAQ.md
+++ b/FAQ.md
@@ -187,6 +187,7 @@ FairEmail follows all the best practices for an email client as decribed in [thi
 * [(110) Why are (some) messages empty and/or attachments corrupted?](#user-content-faq110)
 * [(111) Can you add OAuth authentication?](#user-content-faq111)
 * [(112) Which email provider do you recommend?](#user-content-faq112)
+* [(113) How does biometric authentication work?](#user-content-faq113)
 
 [I have another question.](#support)
 
@@ -1887,11 +1888,26 @@ See also [this FAQ](#user-content-faq6).
 **(112) Which email provider do you recommend?**
 
 Which email provider is best for you depends on your wishes/requirements.
-Please see [this website](https://restoreprivacy.com/secure-email/) or [this website](https://www.privacytools.io/providers/email/)
+Please see the websites of [Restore privacy](https://restoreprivacy.com/secure-email/) or [Privacy Tools](https://www.privacytools.io/providers/email/)
 for a list of privacy friendly email providers with advantages and disadvantages.
 
 <br />
 
+<a name="faq113"></a>
+**(113) How does biometric authentication work?**
+
+If your device has a biometric sensor, for example a fingerprint sensor, you can enable/disable biometric authentication in the navigation (hamburger) menu of the setup screen.
+When enabled FairEmail will require biometric authentication after a period of inactivity or after the screen has been turned off.
+Activity is navigation within FairEmail, for example opening a conversation thread.
+When biometric authentication is enabled only a summary notification with the number of new messages will be shown, so all message content is hidden.
+
+Biometric authentication is meant to prevent others from seeing your messages only.
+FairEmail relies on device encryption for data encryption, see also [this FAQ](#user-content-faq37).
+
+Biometric authentication is a pro feature.
+
+<br />
+
 ## Support
 
 If you have another question, want to request a feature or report a bug, you can use [this forum](https://forum.xda-developers.com/android/apps-games/source-email-t3824168).
diff --git a/README.md b/README.md
index f13ea85d89..4a4c30e591 100644
--- a/README.md
+++ b/README.md
@@ -65,7 +65,7 @@ All pro features are convenience or advanced features.
 * Filter rules ([instructions](https://github.com/M66B/open-source-email/blob/master/FAQ.md#user-content-faq71))
 * Search on device or server ([instructions](https://github.com/M66B/open-source-email/blob/master/FAQ.md#user-content-faq13))
 * Keyword management
-* Biometric authentication
+* Biometric authentication ([instructions](https://github.com/M66B/open-source-email/blob/master/FAQ.md#user-content-faq113))
 * Encryption/decryption ([OpenPGP](https://www.openpgp.org/)) ([instructions](https://github.com/M66B/open-source-email/blob/master/FAQ.md#user-content-faq12))
 * Export settings