Lock screen widgets
Ever wish you could have widgets on your lock screen? Android 4.2 makes it possible. The release adds support for lock screen widgets -- live functioning programs that run right on your device's lock screen.
By default, Android 4.2 gives you five lock screen widget options: Calendar, Digital Clock, Gmail, Messaging and Sound Search. The widgets live on multiple panels within the lock screen, much like what you see on the home screen.
The Android 4.2 lock screen also provides one-touch access to the Camera app as well as the Google Now intelligent assistant. Third-party app developers can create lock screen widgets of their own, too, so many more options should be showing up before long.