US Patent 7768664 Communication system that receives an input from a user

A communication system includes a first apparatus and a second apparatus. The first apparatus matches first identification information with second identification information, and transmits the first identification information to the second apparatus when the first identification information does not match with the second identification information. The second apparatus matches the first identification information with third identification information, determines the first apparatus as a communication destination when the first identification information matches with the third identification information, and transmits predetermined information to the first apparatus.