
Enables you to implement a mechanism to block access to an app based on a username and password entered by the user.
An instance of the CredentialsLockAuthenticator object is created by calling
      the authenticator method.
| Name | Description | 
|---|---|
| create | Stores credentials as hash values or in an encrypted SQL database. | 
| authenticate | Compares entered credentials with the ones saved on the device. | 
| remove | Removes credentials saved on a device. |