Patent ID: 8346939

Claim:
A network system that performs network connection between devices conforming to a predetermined communication standard, the network system comprising: a plurality of client devices in a first network, each client device including: a first network starting unit to start the first network and present first identification information including a predetermined identifier associated with the first network and a prefix that is the same for each client device included in the plurality of client devices in the network; and a server including: a scanning unit to scan for the prefix of the first identification information, a reading unit to read the first identification information located by the scanning unit and including the prefix, an option presenting unit to present to a user, as an option of joining the first network, a client device from the plurality of client devices including the first identification information read by the reading unit, a first network joining unit to join the first network upon selection of the option, and a transmitting unit to transmit, to the selected client device upon joining the first network, a communication encryption key for joining a second network and second identification information designating the second network.