2 ms·I found this interesting too. Does anyone know a reason why it didn't work?by Herald_MJ 8y agoI found this interesting too. Does anyone know a reason why it didn't work?vortico 8y agoWrong finger perhaps? Held at a wrong angle, getting a different part of the fingerprint? Dehydration affecting the capacitance of the body when scanned?wl 8y agoYou can't unlock an iPhone with a fingerprint more than eight hours after the last unlock.