The e-Reader add-on is plugged into a GBA unit, and e-Cards are scanned with it. That second version was released under the name e-Reader in the USA and Australia. The e-Reader was originally released in Japan in 2001 without Link cable support (thus unable to link to other GBA/GC games), but that was added in a second version released in 2002 as e-Reader+ in Japan. It has a LED scanner that reads paper cards with data printed on them, called 'e-Reader cards' or 'e-Cards'. It was also slated for release in Europe, but the release of the device was canceled, though the (now extremely rare, and undumped) European cards had an accidental limited release.
The GBA e-Reader is an add-on for the Game Boy Advance released in Japan, the USA, and Australia.
