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Java Card: The unsung hero of the Java Platforms

There's an excellent
technical overview of Java
Card here.

Java Card is deployed all
over the place: from SIM
cards, to cash
cards, to security
badges and national
identity cards.

Those of you think that Java
Card is too small to be interesting may be surprised to hear that smart cards, like
most everything else, are growing powerful enough to run a mini-web
server. The latest latest version
3.0 of JavaCard includes support Java
Servlets (2.4) (in which the Janitor had some part to play).
That's in addition to the existing
applet based model.

There's quite a number of practical
looking Java Card sessions in store for JavaOne this year.