In one embodiment, a system for facilitating the location of a first item of a set of items includes a first wireless device associated with the first item of the set, the first wireless device including an output device and a receiver, and a second wireless device associated with a second item of the...http://www.google.de/patents/US8154403?utm_source=gb-gplus-sharePatent US8154403 - System and method for associating items of a set
