Information processing device executing communication processing with external device, and method and system for the same

An information processing device may obtain, from a target object, first access information and first information. The information processing device may send the obtained first information to a first server. The information processing device may receive, from the first server, identification information unique to the first information and second access information. The information processing device may store the received identification information in a storage and send an access request information to a second server. The information processing device may download an application program from the second server, install the application program, and accept an instruction for activating the application program. The information processing device may send the identification information to the first server and receive the first information from the first server. The information processing device may establish a connection with the external device by using the first information and execute a communication processing.