When using face recognition to unlock your device, your phone could be unlocked by someone or something that looks like your image. ... Additionally, if you use your face as a screen lock method, your face cannot be used to unlock the screen when turning on the device.
Can Face ID work with a picture?
The face-unlock feature on nearly half of late-model Android phones can still be fooled by photographs, a Dutch study has found. Many people know that Apple's Face ID system is more secure than the default Android facial recognition program. For example, Face ID can't be fooled by a photograph.
Can Face ID be fooled?
Apple's Face ID can be fooled by an altered pair of glasses, but there's a weird catch. ... By putting a small piece of black tape with an even smaller piece of white tape on each lens, the glasses are able to fool the liveness detection.