On demand access control authorization using mobile devices

1. A method of controlling access to at least one access point, the method comprising:

transmitting, using a requesting device, an access request to an access device;

generating, using the access device, an authorization information request in response to the access request, wherein the authorization information request includes at least a non-repeating ID;

generating an authorization request in response to the authorization information request;

transmitting, using the requesting device, the authorization request to an authorization service;

generating, using the authorization service, an authorization token in response to the authorization request;

transmitting, using the authorization service, the authorization token to the requesting device;

transmitting, using the requesting device, the authorization token to the access device;

validating, using the access device, the authorization token; and

adjusting, using the access device, at least one access point.

2. The method of claim 1 , wherein the authorization request is generated by the access device and transmitted to the requesting device.

3. The method of claim 1 , wherein the authorization information is transmitted to the requesting device and the requesting device generates the authorization request.

4. The method of claim 1 , wherein the authorization token is configured to be used one time.

5. The method of claim 1 , wherein the authorization token is configured to be used for a selected time period.

6. The method of claim 1 , wherein the authorization token is configured to be used for a selected number of times.

7. The method of claim 1 , wherein the adjusting further comprises:

unlocking a door lock.

8. The method of claim 1 , wherein the adjusting further comprises:

opening an elevator door.

9. The method of claim 1 , wherein the requesting device transmits an access request to an access device when the requesting device is located within a selected range of the access device.

10. The method of claim 1 , wherein the authorization information request further includes an ID of the access device and at least one of a time of the access request, a location of the access request, or an authorization service endpoint.

11. An access control system comprising:

an access device;

an authorization service; and

a requesting device in communication with the access device and the authorization service, the requesting device comprising:

a processor;

a memory comprising computer-executable instructions that, when executed by the processor, cause the processor to perform operations, the operations comprising:

transmitting an access request to the access device;

receiving an authorization information request generated by the access device in response to the access request, wherein the authorization information request includes at least a non-repeating ID;

transmitting an authorization request to the authorization service;

receiving an authorization token generated by the authorization service in response to the authorization request; and

transmitting the authorization token to the access device;

wherein the access device validates the authorization token and adjusts at least one access point.

12. The access control system of claim 11 , wherein the authorization request is generated by the access device and transmitted to the requesting device.

13. The access control system of claim 11 , wherein the authorization request information is transmitted to the requesting device and the requesting device generates the authorization request.

14. The access control system of claim 11 , wherein the authorization token is configured to be used one time.

15. The access control system of claim 11 , wherein the authorization token is configured to be used for a selected time period.

16. The access control system of claim 11 , wherein the authorization token is configured to be used for a selected number of times.

17. The access control system of claim 11 , wherein the at least one access point includes a door lock.

18. The access control system of claim 11 , wherein the at least one access point includes an elevator door.

19. The access control system of claim 11 , wherein the requesting device transmits an access request to an access device when the requesting device is located within a selected range of the access device.

20. A computer program product tangibly embodied on a non-transitory computer readable medium, the computer program product including instructions that, when executed by a processor, cause the processor to perform operations comprising:

transmitting an access request to an access device;

receiving an authorization information request generated by the access device in response to the access request, wherein the authorization information request includes at least a non-repeating ID;

transmitting an authorization request to an authorization service;

receiving an authorization token generated by the authorization service in response to the authorization request; and

transmitting the authorization token to the access device;

wherein the access device validates the authorization token and

adjusts at least one access point.