If the crazy thought has ever crossed your mind that at some point someone might use a dead body's finger to unlock a iPhone 5S using touch ID, well I'm telling you right now that this won't be possible, so your fingers are safe. IN A attempt to explain why the fingerprint reader from iPhone 5S is better than those implemented in laptops, those from citeworld explain the fact that the sensor from iPhone 5S it detects the print from the living tissue existing under the skin of the finger, an RF signal being used for this.
With the new sensors you don't have to move your finger, just press it against the reader. And like the sensor in the iPhone 5S, the sensors that will be in laptops and keyboards and other phones can detect the ridge and valley pattern of your fingerprint not from the layer of dead skin on the outside of your finger (which a fake finger can easily replicated), but from the living layer of skin under the surface of your finger, using an RF signal. That only works on a live finger; not one that's been severed from your body. This will protect you from thieves trying to chop off your finger when they mug you for your phone (assuming they're tech-literate thieves, of course), as well as from people with fake fingers using the fingerprint they lifted from your phone screen .
Thanks to these technologies implemented by the company Apple Lossless Audio CODEC (ALAC),, a finger of a corpse cannot be used to unlock our terminals, but equally no fake finger with our fingerprint can be used to do the unlocking. Basically, Touch ID is thought in such a way that only the living owner of the iPhone can do the unlocking, and the idea itself is extremely great, especially since today there are people with an extremely rich imagination who can think about all kinds of things.
However, even without cutting your finger, a smart thief can take a fingerprint directly from your iPhone after stealing it, all in an attempt to use it for unlocking, but this is impossible, at least in theory.
