This picture was taken at the digital life show last friday by a guy named “Apreche”, here we can see some details of the interface wich will be used to connect to the Wi Fi network.The full set of images can be found here.

Joystiq has an interesting analysis of the pictures, apparently, security could be an issue if the network indeed uses the protocol showed on this pictures (WEP). Check out the comments too, you will find some useful info if you are planning on playing via wifi with your DS.