The bottom half of the case appears to be some kind of miniaturized, old-fashioned computer terminal. Most of it is occupied by a keyboard. There is a small liquid-crystal display screen that can probably handle about five lines of text at a time. There is a penlike object attached to the case by a cable, maybe three feet long uncoiled. It looks like it might be a light pen or a bar-code scanner. Above the keyboard is a lens, set at an angle so that it is aimed at whoever is typing on the keyboard. There are other features whose purpose is not so obvious: a slot, which might be a place to insert a credit or ID card, and a cylindrical socket that is about the size of one of those little tubes.