@@ -17,7 +17,6 @@ Before authentication, you must specify the [authentication type](../reference/a
| API | Description |
| ---------- | ----------------------- |
| getVersion() : number | Obtains the version information of an authentication object. |
| getAvailableStatus(authType : UserAuthType, authTrustLevel : AuthTrustLevel): void | Checks whether the device supports the specified authentication type and level.|
| getAuthInstance(challenge : Uint8Array, authType : UserAuthType, authTrustLevel : AuthTrustLevel): AuthInstance | Obtains an **AuthInstance** instance for user authentication.|
| on(name : AuthEventKey, callback : AuthEvent) : void | Subscribes to the user authentication events of the specified type.|
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@@ -25,26 +24,6 @@ Before authentication, you must specify the [authentication type](../reference/a
| start: void | Starts user authentication. |
| cancel: void | Cancel this user authentication. |
## Obtaining Authentication Object Version Information
### How to Develop
1. Apply for the permission.<br> Configure the **ohos.permission.ACCESS_BIOMETRIC** permission in **requestPermissions** in the **module.json5** file. For more information, see [module.json5](../quick-start/module-configuration-file.md).
2. Use [getVersion](../reference/apis/js-apis-useriam-userauth.md#useriam_userauthgetversion9) to obtain the version information.
```js
import userIAM_userAuth from '@ohos.userIAM.userAuth';
// Obtain version information.
try {
let version = userIAM_userAuth.getVersion();
console.info("auth version = " + version);
} catch (error) {
console.info("get version failed, error = " + error);
}
```
## Checking Authentication Capabilities Supported by a Device
