> 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/account/set-security/lock-method.md).

# Lock Method

* In this function, users can choose an app authentication method.
* Condition: passcode is enabled.
* To access the function, please follow the steps below.

**Step 1**

* On the Security screen, tap on "Lock Method" --> Display a popup to choose an authentication method for the app, including: 
  * Passcode: only use the passcode.
  * Passcode/Biometric: use both a passcode and biometrics (Face ID, Fingerprint).                                                      ![](https://3885373335-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FX7ySYFWpl8DCdr37E2NT%2Fuploads%2FrViBiDWBDwFRm6ZmYuph%2Fimage.png?alt=media\&token=b18cb3c6-4522-4451-9b15-048105332538)

**Step 2**

* Tap the option the user wants.