On an open device, you can inject a passing or failing fingerprint or face ID, depending on the device model, to test different authentication scenarios.
To learn more about biometric injection, including requirements and limitations, see Biometric injection overview.
Watch this short video to see how you can inject a fingerprint.
To inject a fingerprint or face ID:
- Open the application you want to test and make sure it stays in the foreground.
- On the device toolbar, click the fingerprint icon
or face ID icon 
. - In the Fingerprint injection or Face ID injection dialog box, do one of the following:
- To test a successful fingerprint or face ID, click Passed.
- To test an invalid fingerprint or face ID, click Failed.