Ahead of the iPhone X and Face ID being officially unveiled, one of the early rumors of the iPhone X is that it could feature an in-display fingerprint sensor. This meant that instead of a physical sensor placed outside of the phone, like in the home button, it could exist in/under the display, thus allowing Apple to create a phone sans home button.
Now obviously that rumor did not pan out, and while reports are claiming that facial recognition could be the next big thing, Synaptics...