RFID in a watch that's smarter than you?

... "The tags consist of an electronic circuit, antenna and memory chip. When pinged by a radio signal, they answer with an ID code identifying the tagged object. The tags currently cost about 50 cents each, and that price is expected to drop dramatically with increased demand as such corporate giants as Walmart implement RFID systems to manage their inventory. The UW smart watch system equips users with a wristwatch that acts as an interface, driven by a small personal server that the wearer can easily carry in a pocket but which will eventually be part of the wristwatch itself. Important items are labeled with RFID tags and RFID readers are installed at various locations - home, car and work, for instance - to read the tags. When the person passes a reader, the reader pings the tags and the ID information is broadcast locally to the user's personal server, which processes it and checks to see that all critical items are present. The server also takes into account the last known location of items, the user's calendar and where the user may be going. If the server finds that an item is missing and will be needed, it signals the watch to prompt the wearer. " ...