Or a circular aperture could naturally be viewed as a "spy hole". Why not use the gyros, the fact that the watch is on a movable limb, and there is typically a

Or a circular aperture could naturally be viewed as a "spy hole". Why not use the gyros, the fact that the watch is on a movable limb, and there is typically a single viewer, to fake up a holograpic view, whereby a virtual screen is bigger than the watch and the user sees the whole screen by moving their wrist relative to their eyes.