Three men are sitting naked in the sauna. Suddenly there is a beeping sound. The first man presses his forearm and the beeping stops. The others look at him questioningly. "That's my pager," he says. "I have a microchip under the skin of my arm." A few minutes later a phone rings. The second man lifts his palm to his ear. When he finishes he explains, "That's my mobile phone. I have a microchip in my hand." The third man, feeling decidedly low-tech, steps out of the sauna. In a few minutes he returns with a piece of toilet paper extending from his rear. The others raise their eyebrows. "I'm getting a fax," he explains.