OrbitalDawn
Ulysses Everett McGill
I personally love a fingerprint sensor on the front of a phone. While putting it on the back really free's up a lot of screen real estate, it's not as intuitive to use hidden on the back of the phone. Would love to see it implemented into the screen. Or alternatively face recognition.
Yeah, the in-screen method would be interesting. But you might find the one on the back is pretty intuitive, unless you like using the phone flat on the table.