Patent ID: 8767237

Claim:
A printing authentication system comprising: a printing device; and a device management apparatus, wherein the device management apparatus includes an identification information storage unit configured to store, as an identification information set, plural pieces of user identification information given to a same user, and a providing unit configured to read, in response to validation of an authentication request accompanying specific user identification information from the printing device, the identification information set including the specific user identification information from among the plural pieces of the user identification information stored at the identification information storage unit and provide the identification information set to the printing device, and the printing device includes a specifying unit configured to specify, in response to identification information associated with print data of a requester who requests printing of the print data matching any one of the plural pieces of the user identification information constituting the identification information set received from the device management apparatus, the print data as a printing target, and a printing execution unit configured to execute the printing of the print data specified as the printing target by the specifying unit.