When it came to the eye-tracking iteration of Portal 2, the new controls apparently worked well, but also necessitated separating aiming and viewpoint to ensure it worked.

ENGADGET

The secondary, front-facing camera, meanwhile, has a 2-megapixel iteration of Sony's Exmor R sensor.

ENGADGET: Sony Xperia Z: hands-on with the new flagship at CES 2013 (video)

Well the real story is that Android 2.1 is in no way dramatically different than the iteration of the OS which is currently running on the Motorola Droid (2.0.1).

ENGADGET: Nexus One review