Imagine unlocking your Android phone without tapping in a PIN or scanning your fingerprint—just because your smartwatch is nearby. A new feature spotted in development could make that a reality, ...

My phone stays unlocked when I am driving or at my home, and it's brilliant.

Google’s system basically keeps all the security of a SIM PIN, while removing all the inconvenience. Just make sure you jot down the Android-managed PIN somewhere secure, in case your phone ever dies ...