A client for the NCard a gamercard and adds xbox live/PSN like abilities to the Wii. You can use in your signature on forums to tell people what games you’ve been playing on your Wii. You run it, it reads your play activity from the Wii messageboard and automatically updates your NCard. You can also automatically put you wii code on the card through the client.

http://wiibrew.org/wiki/Ncard