1# Before You Start 2 3<!--Kit: User Authentication Kit--> 4<!--Subsystem: UserIAM--> 5<!--Owner: @WALL_EYE--> 6<!--SE: @lichangting518--> 7<!--TSE: @jane_lz--> 8 9Before you get started, learn about the development process. 10 11- [Obtain supported authentication capabilities](obtain-supported-authentication-capabilities.md). 12 13- [Initiate a request for user authentication and obtain the authentication result](start-authentication.md). 14 15- Verify and use the authentication result. For details, see [Key Access Control via Secondary Authentication](../UniversalKeystoreKit/huks-identity-authentication-overview.md). 16 17- (Optional) [Cancel authentication](cancel-authentication.md). 18 19- (Optional) [Apply custom authentication](apply-custom-authentication.md). 20 21## Requesting Permissions 22 23The application capable of user authentication based on biometric features (such as face and fingerprints) must have the ohos.permission.ACCESS_BIOMETRIC permission. 24 25This permission is a system_grant permission and must be declared in the **requestPermissions** tag in the **module.json5** file. For details, see [Declaring Permissions](../AccessToken/declare-permissions.md). 26