A carrier structure has a plurality of cells. A corresponding plurality of objects having data carriers, such as radio frequency identification (RFID) tags, is placed in each cell. Each cell has an indicator associated therewith and is defined by walls that substantially prevent waves (such as RF waves)...http://www.google.de/patents/US8106746?utm_source=gb-gplus-sharePatent US8106746 - Method, apparatus, and system for selecting and locating objects having radio frequency identification (RFID) tags
