Systems, methods, and devices for access control

Abstract

An access control system may include a reader configured to receive credential data from a credential using a non-NFC communication protocol when the credential is within a first distance of the reader; verify that the credential is valid based on the credential data; provide the credential with a first access token using the non-NFC communication protocol; and receive, using the non-NFC communication protocol, a command from the credential corresponding to an access control decision for the credential based on a comparison of the first access token with a second access token. The system may also include an NFC tag configured to provide the credential with the second access token using an NFC protocol when the credential is within a second distance of the NFC tag, the second distance shorter than the first distance.

Dependencies are inferred from the claim text.