You might want to take into account that the locking keys and screen doesn't help. The moment the pop-out camera is pressed, the keypad and screen becomes active. This alone is the reason why I have to keep my NIT switched off most of the time. I'm storing it in my coat pocket and most of the time, I found it switched on without my knowledge. I requested some solution to this problem but didn't get any sensible resolution to the problem. I have a soft pouch (similar to the "sock" delivered with the NIT) but the net effect of that is 10% (I mean, 90% of the time it still unlocks the keys on it's own). I'm waiting for something called "Soft Poweroff" that people have been talking about on the forums. It seems to be broken since the arrival of OS2008 for the N800. I've no idea what it is but hopefully, it's something that requires a little more than plain press on the camera to deactivate the keylock!