Originally Posted by dhkx
Knock off only works on the home screen (and the status bar). It would be quite silly otherwise since you wouldn't be able to double tap to zoom etc.
I can also see it turning the screen off when using your keyboard lol. It definitely sounds like a nice feature - especially considering the buttons are on the back. It would be annoying to have to pick your phone up off of a table or desk to turn the screen on sometimes.