Sales of PDAs might be down, but the New York Times reports on some gadgets that are selling well during these uncertain times: the Air Supply MiniMate, a battery-powered portable air purifier that hangs around your neck (guess what people are using that for); the Evacuchute, a parachute designed to b e used for escaping from fires in skyscrapers; and the TrackIT Sonic Laptop Alarm, which goes off it is taken more than forty feet away from a special transmitter you keep on your keychain.
