1
Robert F D Avello, Daniel S Rokusek, Francis P Tobolski Jr: Radiotelephone credit card data communications. Motorola, Raymond A Jenski, Rolland R Hackbart, Donald B Southard, May 16, 1989: US04831647 (116 worldwide citation)

Method and apparatus for communicating credit card information read at a mobile radiotelephone unit is disclosed. Data read from a credit card is placed in a variable length error protected format and transmitted from the mobile radiotelephone unit to authorize payment of the radiotelephone call.


2
Robert F D Avello, Daniel S Rokusek, Francis P Tobolski Jr: Radiotelephone credit card data communications. Motorola, Rolland R Hackbart, August 22, 1989: US04860336 (95 worldwide citation)

A credit-card radiotelephone for a vehicle with a door includes a radio transceiver and a control unit with a telephone handset, credit card reader, hookswitch and door switch. The telephone handset has a microphone, a speaker, and a dial. The radio transceiver has a transmitter, a receiver, and a f ...