Nintendo has demoed a card reader for their Nintendo DS portable gaming machine at the Toy Forum in Japan. The card reader is used to incorporate battle cards (such as Yu-gi-oh) with the game on your DS, theoratically you can also play battle card games on the network with users all over the world. The game demonstrated was Jushinten (rough translation: myth of monsters), there is no word on the availability, but expect that this should be ready real soon. — Sam Chan
Toy Forum [NikkeiBP]