Biometric impersonation refers to the risk of someone using a photo, video, or other methods to spoof or trick a facial recognition system into authenticating them as the legitimate user. This is a significant concern with facial recognition used for local authentication on mobile devices, as attackers might exploit this vulnerability to gain unauthorized access. Other options such as
"deepfake" could be a method used in biometric impersonation, but the best description of the risk is biometric impersonation itself.