A radio unit used in a wireless communication system. A card reader reads information from a card. The read information includes a read telephone number stored on the card. A transceiver transmits a signal including the read telephone number to a base station. The transceiver receives calls directed...http://www.google.com/patents/US6382507?utm_source=gb-gplus-sharePatent US6382507 - Wireless telephone debit card system and method
