You can use Eye-Fi card data communication on a computer that you already have configured for a wireless LAN access point. See the user documentation that comes with the Eye-Fi card or contact the card manufacturer for details about configuring access point and other settings. Using an Eye-Fi card causes radio signals to be emitted by the camera. Whenever you are in an area where use of radio wave emitting devices is restricted, be sure to stop using the Eye-Fi card or disable Eye-Fi card communication.