| CPC G06Q 20/34 (2013.01) [G06F 3/017 (2013.01); G06Q 20/405 (2013.01)] | 20 Claims |

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1. A first card comprising:
one or more antennas;
one or more processors;
memory in communication with the one or more processors and storing instructions that are configured to cause the first card to:
receive, from a second card, the second card associated with a same account as the first card, a first signal and a gesture, wherein the first signal comprising authorization information relating to account information;
authenticate the first signal using the account information;
determine, from the gesture and the account information, authorization conditions;
change an authorization limitation of the first card based on the authorization conditions;
receive, from a first terminal, a first transfer request; and
responsive to the first card having the authorization limitation, transmit, to the first terminal, a transfer authorization.
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