Can't make any sense of the digital touch communication features Apple packed into their watch: Sketch, Tap, Heartbeat. For me by far the weakest point in their presentation. Kevin Lynch trying to convince us that his friend and he had agreed on a certain tap sequence to catch each other's attention for lunch, then the drawing of a fish and the reply by sharing one's hearbeat. Seriously? Sorry, but to me that's borderline inane (not sure which side of). It's painful to think of it. So if Apple fails to make a good case for the usability of these features during their keynote, they're juvinile gimmicks at best, or plain superfluous at worst. In either case, Apple is degrading itself and its product by adding (useless) features instead of placing focus on the core usefulness a watch has always had - instant information/notification at the turn of a wrist.