Patent ID: 11936684
Assignee: VISA INTERNATIONAL SERVICE ASSOCIATION
Field: Digital communication (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 10:
11. A user device, comprising:
a processor; and
a memory storing computer-executable instructions that, when executed by the processor, cause the user device to:
receive a first message comprising first access device identification data associated with a first access device, the first access device identification data comprising a first public key;
receive a second message comprising at least second access device identification data corresponding to a second access device and a digital signature;
perform a validation process for the second message based at least in part on the digital signature and a second public key;
when the second message is invalid and the second public key is the first public key associated with the first access device:
identify that the second access device identification data differs from the first access device identification data; and
present the second access device identification data indicating a difference between the second access device identification data and the first access device identification data; and

when the second message is valid and the second public key differs from the first public key:
terminate processing of the second message based at least in part on determining that a confirmation indicating an intent to interact with the second access device has not been received.