Unlocking Glass with screen-lock
The latest Google Glass Explorer Edition software update (XE12) comes with a screen-lock mechanism, allowing the gadget's owner to swipe the arm in different combinations to gain access to the device.
The screen lock is about as secure as a four-digit PIN code on a smartphone. This basic security feature allows data stored on the device to remain secure.
When the display is locked, a small circle appears on the bottom of the display, prompting the user to swipe the Glass arm away from you (the circle goes to the right) or towards you (to the left). This example shows the lock setup and the screen unlocking mechanism.