It's a paradigm which makes a fair amount of sense on a touchscreen: it's an easy motion and it acts as a screen against accidental presses if the screen gets t

It's a paradigm which makes a fair amount of sense on a touchscreen: it's an easy motion and it acts as a screen against accidental presses if the screen gets turned on in your bag or pocket. Translating it to a mouse makes no sense, and it probably only works that way because touch events are being turned into pointer events. In practice what should happen is a mouse click (but not a touch event) should move onto the lockscreen, or this screen should be skipped entirely if the device does not have a touchscreen or is a laptop with a touchscreen which is covered when it's in a bag.