CPC H02J 50/80 (2016.02) [G06F 9/54 (2013.01); G06K 19/071 (2013.01); G06K 19/0723 (2013.01); H02J 7/00034 (2020.01); H02J 50/10 (2016.02); H04B 5/72 (2024.01); H04B 5/79 (2024.01); H04W 4/80 (2018.02); H04W 8/005 (2013.01); H04W 76/10 (2018.02); G06K 19/041 (2013.01); H04B 5/22 (2024.01); H04B 5/24 (2024.01)] | 20 Claims |
1. A method comprising:
receiving a first signal by a transaction card;
responsive to receiving the first signal, transmitting a data packet from the transaction card to a mobile device;
responsive to transmitting the data packet, receiving, via a Near-Field Communications (NFC) antenna of the transaction card, a response from the mobile device, the response including a first frequency for energy transmission and distance data indicating a distance between the transaction card and the mobile device;
determining, via a microprocessor of the transaction card, a second frequency for energy transmission based on the first frequency and the distance; and
broadcasting, via the NFC antenna, a second signal to the mobile device at the second frequency to charge the mobile device via inductive charging.
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