(1) stick figure owners on the card.(2) code identification (Personal Identification Number - PIN).(3) settled as signature on the card. In order to check when spent.(4) shops must file update bank card cancellation be present always, and check before receiving the card.(5) for approval before the show.(6) improvements in technology, such as using microchip for magnetic stripe Technology So difficult to counterfeit. Or use of biological monitoring technology
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