When was the last time you winked? When was the last time you winked and didn't immediately regret it? It's probably been a while, but Google's aiming making winking cool again(?), by hard-coding some ;) functionality right into Glass.
If there's anything technology has been driving towards, it's the innovation that allows corpses to wink. Finally! But don't worry, there's a use for this for people other than flirty necrophiliacs.