> For the complete documentation index, see [llms.txt](https://docs.fwallet.net/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.fwallet.net/app-fruits-wallet/security-lock/security-authentication/fingerprint-authentication.md).

# Fingerprint Authentication

* Condition: passcode is enabled, and the app allowed biometric authentication.
* To access the function, please follow the steps below.

**Step 1**

* The user touches the fingerprint sensor to authenticate.                                                                                                                                                                                                                                                                           ![](/files/qhgDdqK3T3tfSI5UmSct)

**Step 2**

* If the fingerprint is not correct, the warning "Not recognized" will be displayed. Users touch the fingerprint sensor to try again.                                                                                                                                                                                                                                                                                                           ![](/files/BzGpm9kUy8AuGEZ22k07)
* If the fingerprint is incorrect several times in a row, the fingerprint icon will be disabled and reopened after 1 minute. Users can only enter a passcode for authentication.                                                                                                          ![](/files/acnj7yV2h5ft9S23IfPf)

***Note:***

* Tap PIN, if users want to enter the passcode for authentication.                                                                                                           ![](/files/LfMY35UJMhC55INiWFWL)
* Tap the fingerprint icon, if users want to use fingerprint for authentication (by default).                                                                                                           ![](/files/XA8ych06cFmLkbqUg47a)