Patent ID: 11887416
Assignee: ASSA ABLOY AB
Field: Control (Instruments)
Classification: CPC G | IPC G

Claim 18:
19. A reader, comprising:
a first communication interface for wireless communication;
a processor; and
a memory comprising instructions that when executed by the processor cause the processor to:
establish, using the first communication interface, a link with a credential device when the credential device is within a first distance of the reader, the credential device comprising credential data;
receive from the credential device, over the link, the credential data using a first communication protocol with the credential device;
verify that the credential device is valid based on the credential data;
in response to verifying that the credential device is valid, mark the credential device as valid and track a location of the credential device relative to the reader using a second communication protocol with the credential device different than the first communication protocol; and
make or delay an access control decision for the credential device based on whether the location of the credential device indicates that the credential device is within a second distance of the reader, wherein the second distance is less than the first distance.