How Secure Are Face ID and Touch ID?
Apple claims Face ID and Touch ID are secure, and for the most part that’s true. It’s extremely unlikely a random person could unlock your phone. But that’s not the only type of attack to worry about it. Let’s dig a little deeper. Face ID and Touch ID are Generally Secure In general, Touch ID and Face ID are secure. Apple claims that there is a 1 in 50,000 chance that someone else’s fingerprint will falsely unlock your iPhone and a 1 in 1,000,000 chance that someone else’s face will do it. There’s a 1 in 10,000 someone could just guess a four digit passcode and a 1 in 1,000,000 chance they could guess your six digit passcode (and they get three tries before they’re locked out). That should put things into perspective. The chance that someone could randomly pick up—or steal—your phone, and then be able to unlock it by using their fingerprint, face, or even by guessing your passcode is incredibly slim caveat to this is identical twins or siblings that look very similar