Patent ID: 7522729

Claim:
An encryption key setting system performing encryption, with an encryption key, in advance of communication of wireless communication data through wireless communication using electric waves, said encryption key setting system comprising: an access point which is a relay for a wireless LAN; and a terminal which is equipped with a device for wireless LAN connection and comprises a registration button (TB) for: remote connection to said access point and giving instructions to start setting said encryption key at said access point by operating the registration button (TB); wherein the access point comprises: a communication range restriction module that restricts the wireless communication range between said access point and said terminal to be narrower than the normal communication range and; an encryption key setting module that, when the wireless communication range is restricted by said communication range restriction module, sets said encryption key by wirelessly communicating encryption key data, created by the access point, and representing the contents of said encryption key, between terminals that exist within said communication range and said access point, and wherein the encryption key setting module sets said encryption key by: transmitting data representing a selected WEP key for use by the terminal; and determining whether the WEP key data has been successfully delivered to the terminal by utilizing a data return function of said terminal.