It runs the Java Card 2.0 standard, which is discussed in the article linked above. While it might be the coolest piece in the catalog, the Java ring was just one of many ways to get your iButton.

Gemplus, the world`s leading provider of smart card solutions, announces the launch of GemXplore CASE 3.1 for Java Card. This is the latest in a range of development kits designed to help ...