System and method enabling mobile near-field communication to update display on a payment card

A non-transitory computer readable medium storing programming code storing programming code when executed is operable to cause a processor of a smart payment device to perform functions, including functions to:

• emit, by a near-field communication device of a payment card, an authentication signal for receipt by a near-field communication device of a mobile device, wherein the emitted authentication signal:
• includes a payment card number currently displayed on a visual display of the payment card,
• is emitted after the payment card is introduced into any portion of a near-field communication electric field surrounding the mobile device, and
• is approval of a request to change the payment card number currently displayed on the visual display of the payment card;
• receive, while the payment card remains within any portion of the near-field communication electric field surrounding the mobile device, by a near-field communication device of the payment card, an updated payment card number signal, wherein the updated payment card number signal contains an updated card number;
• and
• in response to receiving the updated payment card number signal, replace the payment card number currently displayed on the visual display of the payment card with an updated payment card number.

A device, comprising:

• a processor;
• a memory operable to store programming code;
• a near-field communication device operable to emit signals under control of the processor;
• a visual display operable to present a payment card number under control of the processor;
• an application stored in the memory and executable by the processor, the application operable to perform functions, including functions to:
• emit, via the near-field communication device, an authentication signal, wherein the emitted authentication signal:
• includes a currently-displayed payment card number on a visual display of the payment card,
• is emitted after the payment card is introduced into a portion of a near-field communication electric field surrounding a mobile device, and
• is approval of a request to change the currently-displayed payment card number on the visual display of the payment card;
• receive, while detecting the portion of a near-field communication electric field surrounding the mobile device, by a near-field communication device of the payment card, an updated payment card number signal, wherein the updated payment card number signal contains an updated payment card number;
• and
• replace the payment card number currently displayed on the visual display with an updated payment card number.