As far as I understand, if you unlock the watch while on your wrist (not sure exactly how, haven't seen that demo'd yet) it will stay unlocked for as long as you keep it on the wrist. If you take it off, it'll lock. So far so good. I wonder whether the watch can be locked even while on the wrist. If not, consider this scenario: You're at the company X'mas party, had a few too many to drink (just stay with me for argument's sake) and pass out on a couch in the corner. Your co-workers, going with the times, won't draw penises on your face with permanent marker. No, they notice the watch on your wrist and... The next day (or the day after, depending how long you take to get over your hangover) you wonder why that one co-worker that always ignored you before suddenly gives you smiles all day long, and why some of your friends won't even look at you. The thing is, with taps, doodles and heartbeats the is no log of what has been sent from your watch, so you may never know what was said or implied in your name Thoughts?