In a new patent, Apple explains how to integrate a fingerprint sensor directly into the digital crown of the Apple Watch.
Using special light from the digital crown, the sensor could not only read the user's fingerprints, but also understand if the person is wearing gloves or anything else that can be recognized by the sensor.
This means that the digital crown could read a fingerprint and compare it with a previously stored image.
Currently, there are two ways to unlock an Apple Watch: entering a PIN code on the touch screen or unlocking the iPhone, which also unlocks the paired watch. A Watch with Touch ID would certainly be more practical to unlock.