"Transmission of documents via telephone wires is possible in principle, but the apparatus required is so expensive that it will never become a practical proposition."
Dennis Gabor, British physicist
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| Number | Title | Issue Date |
| 7036739 | Data storage device apparatus and method for using same A data storage device for use as a portable card, magnetically encodeable card, magnetic credit card or the like is shown. The data storage device includes a substrate having at least one surface. A high density, magnetically coercive material layer is disposed on o... | 05/02/2006 |
| D518051 | ID card verification device | 03/28/2006 |
| D491186 | Magnetic stripe simulacrum for transaction acceptance systems | 06/08/2004 |
| 5321243 | Card reader apparatus with read head mounting structure and card guide A reading head mounting arrangement is disclosed. The arrangement comprises a base having a top surface and extending from a side thereof an upright mounting member for mounting of a reading head in proper spaced relationship from the top surface of the b... | 06/14/1994 |
| 4134537 | Transaction terminal A terminal for providing for the performance of transactions by a user on a step by step basis and with the terminal, including, a visual display for displaying to the user at specific steps in a transaction instructional text to the user for the performa... | 01/16/1979 |