MobileSecurity
Biometric Authentication
Also written as Face ID, Touch ID, Fingerprint Login
Letting a user log in or authorize an action using their face or fingerprint instead of typing a password, via the device's built-in hardware sensors.
Think of it like
Like a building using a fingerprint scanner at the door instead of handing out and checking physical keys.
Junior or senior?
Junior sounds like
Isn't sure what actually happens on the backend when a user unlocks the app with Face ID.
Senior sounds like
Understands biometric data never leaves the device — the app only gets a yes/no confirmation.
Ask them
“What actually happens on the backend when a user unlocks your app with Face ID or a fingerprint?”