An information processing system includes a service utilizing device and at least one information processing device to provide a service for the service utilizing device. A temporary code issuing unit to issue a temporary code is provided in the information processing device. A device authentication token generation unit is provided in the service utilizing device and generates a device authentication token by using the temporary code obtained from the information processing device. A device authentication ticket issuing unit is provided in the information processing device and verifies whether the device authentication token obtained from the service utilizing device is valid by using the temporary code and issues a device authentication ticket depending on a verification result. An access unit is provided in the service utilizing device and accesses a resource in the information processing device by using the device authentication ticket obtained from the information processing device.