HTC's useful lock screen

Google published a patent last week that allows users to interact with a smartphone or PC to unlock the device and perform one command. Guess what? HTC already offers something very similar in Android phones using its latest version of Sense. Users can drag the virtual ring on the lock screen around one of four apps and instantly get taken to that function, whether it be the camera, calendar, or Angry Birds. It first debuted on the HTC Sensation 4G.