The signs have been there for a while. Phones went from being tethered to your wall to fitting in your back pocket. Computers went from desks to laps. Headphones went from over the ear to inside the ear. If there’s a trend in technology, it is this: Go small. Smaller still. Even smaller than that. Devices may start disappearing altogether. In fact, in the very near future, because of microchipping, our technology will — literally — be part of our skin.