The emergence of the code name "Applemesa" has further fueled speculation.This name was previously associated with Touch ID technology in other Apple devices, indicating the company has prior experience with the technology and is actively exploring its implementation in a smartwatch form factor. this doesn't guarantee immediate inclusion, but confirms Apple is actively investigating the possibility.
The question of how apple will integrate Touch ID into the Apple Watch remains. Several scenarios are being considered.One possibility involves embedding the sensor within the side button, a concept for which apple already holds a patent. Another approach could involve integrating a sensor directly into the display, allowing users to authenticate with a single touch, or potentially utilizing a sensor on the underside of the watch casing.