A radio frequency (RF) device (or “tag”) for containing specific information relating to a particular good being shipped from one location (e.g., warehouse) to another (e.g., customer). The device includes a circuitized substrate (e.g., a printed circuit board), a semiconductor chip, an antenna and...http://www.google.es/patents/US7142121?utm_source=gb-gplus-sharePatente US7142121 - Radio frequency device for tracking goods
