The U.are.U 4500 Reader is a USB fingerprint reader featuring an elegant, sleek design with a soft, cool glow and, of course, the unsurpassed performance. Made for power-users and shared environments, the U.are.U 4500 is the natural choice for those who want and need a great solution. The U.are.U 4500 Reader utilizes optical fingerprint scanning technology for superior image quality and product reliability.