A playmate toy or similar children's toy is provided having associated wireless, batteryless ID tag that can be read from and/or written to using a radio-frequency communication protocol. The tag is mounted internally within a cavity of the toy and thereby provides wireless communication of stored information...http://www.google.com.au/patents/US7488231?utm_source=gb-gplus-sharePatent US7488231 - Children's toy with wireless tag/transponder
