Authentication using credientials cached at multi-function device

A computer program product for accessing a multifunction peripheral, the computer program product comprising:

• a non-transitory computer-readable storage medium having program instructions embodied therewith, the program instructions executable by a computer to cause the computer to perform a process, comprising:
• receiving authentication information of a user from an external server, the received authentication information being sent by the external server to the computer to add the user to a list of authorized users hosted in a cache of the computer, and wherein the list of authorized users hosted in the cache of the computer system are pre-cached;
• receiving authentication information of the user from a client device on the computer after the user has been added to the list of authorized users hosted in the cache of the computer system;
• comparing the authentication information of the user received from the client device to the authentication information in the list of authorized users hosted in the cache of the computer;
• authenticating the user for access to the computer when the authentication information received from the client device corresponds to the authentication information associated with the user in the list of authorized users in the cache of the computer;
• and
• updating the list of authorized users in the cache of the computer system upon request of the user via a mobile application or other computer system in communication with the external server.

A multifunction peripheral comprising:

• a cache;
• and
• a processor configured to:
• receive authentication information of a user from an external server, the received authentication information being sent by the external server to the multifunction peripheral to add the user to a list of authorized users hosted in the cache of the multifunction peripheral, and wherein the list of authorized users hosted in the cache of the computer system are pre-cached;
• receive authentication information of the user from a client device after the user has been added to the list of authorized users hosted in the cache of the computer system;
• compare the authentication information received from the client device to the authentication information in the list of authorized users hosted in the cache of the multifunction peripheral;
• authenticate the user for access to the multifunction peripheral when the authentication information received from the client device corresponds to the authentication information associated with the user in the list of authorized users in the cache of the multifunction peripheral;
• and
• update the list of authorized users in the cache of the computer system upon request of the user via a mobile application or other computer system in communication with the external server.