Patent ID: 8341716

Claim:
An information processing device comprising: a reception portion that receives input identification information that identifies a user; a communication portion that transmits the identification information to a certification device which determines whether the user has permission to use the information processing device; a storage portion; a registration portion that stores the identification information in the storage portion, in response to the certification device determining that the user has permission to use the information processing device; a certification portion that determines whether the information processing device is unable to communicate with the certification device and determines whether the user has permission to use the information processing device based on the identification information stored in the storage portion, in response to determining the information processing device is unable to communicate with the certification device; a detection portion that detects a cause of non-communication when the certification device cannot be communicated with; and a prohibition portion that prohibits the certification portion from determining whether the user has permission to use the information processing device based on whether the identification information is stored in the storage portion, when the cause of the non-communication is a predetermined cause.