If this sounds paranoid, take it up with IBM. The company filed a patent application in 2001 which contemplates using this wireless snooping technology to track people as they roam through ”shopping malls, airports, train stations, bus stations, elevators, trains, airplanes, rest rooms, sports arenas, libraries, theaters, museums, etc.” An IBM spokeswoman insisted the company isn’t really prepared to go this far. Patent applications are routinely written to include every possible use of a technology, even some the company doesn’t intend to pursue. Still, it’s clear somebody at IBM has a pretty creepy imagination.