A corporation named Wherify Wireless, Inc.(1) has just started selling a very special, new-style wristwatch. Among other interesting attributes, this watch can be locked on the wrist for "safety." The new device is a lot more than just a wristwatch, though. As with the newer Timex and Casio watches, the Wherify watch displays Global Positioning System (GPS) information. It also has the ability to synchronize with the nation's atomic clock system and so not only keeps accurate time but also resets itself anytime the wearer enters another time zone. More interesting yet, the watch is actually a transceiver. That is,...