Granted Patent B2

US 12,657,972 · App. 18/522,903 · Granted Jun 16, 2026

Inventors: Philip Hoyer (Richmond, GB); Fredrik Carl Stefan Einberg (Huddinge, SE)

Assignee: ASSA ABLOY AB

G07C9/00182G07C9/00563G07C9/28G07C2009/00198G07C2009/00333G07C2009/00357

Abstract

Claims (23)

1 . A reader comprising:

at least one 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 at least one communication interface, a first link with a credential using a non-NFC communication protocol when the credential is within a first distance of the reader, the credential comprising credential data;

receive the credential data over the first link;

verify that the credential is valid based on the credential data;

provide the credential with a first access token over the first link;

establish, using the at least one communication interface, a second link with the credential using an NFC protocol when the credential is within a second distance of the reader closer than the first distance;

receive a second access token from the credential over the second link; and

make an access control decision for the credential based on the second access token.

2 . The reader of claim 1 , wherein the non-NFC communication protocol is a Bluetooth communication protocol.

3 . The reader of claim 1 , wherein the first access token comprises a one-time password (OTP).

4 . The reader of claim 1 , wherein making an access control decision for the credential based on the second access token comprises making an access control decision for the credential based on whether the second access token matches the first access token.

5 . A method for access control, the method comprising:

receiving credential data at a reader from a credential using a non-NFC communication protocol when the credential is within a first distance of the reader;

verifying that the credential is valid based on the credential data;

providing the credential with a first access token from the reader using the non-NFC communication protocol; and

making an access control decision for the credential based on a comparison of the first access token with a second access token, the second access token communicated to or by the credential using an NFC protocol.

6 . The method of claim 5 , wherein the second access token is communicated by the credential to the reader using the NFC protocol when the credential is within a second distance of the reader closer than the first distance.

7 . The method of claim 5 , wherein the second access token is communicated to the credential by an NFC tag using the NFC protocol when the credential is within a second distance of the NFC tag, the second distance shorter than the first distance.

8 . The method of claim 7 , wherein making an access control decision for the credential based on a comparison of the first access token with a second access token comprises receiving a command at the reader from the credential based on a comparison of the first access token with the second access token by the credential.

9 . The method of claim 5 , wherein the non-NFC communication protocol is a Bluetooth communication protocol.

Assignments (1)

Continuity (3)

References Cited (400)