This reminds me of Sun's Java Ring which could run Java on its own internal Java Virtual Machine. It worked through contact rather than wirelessly. It was given

This reminds me of Sun's Java Ring which could run Java on its own internal Java Virtual Machine. It worked through contact rather than wirelessly. It was given away for free to all attendees of the 1997 JavaWorld conference and I remember being very excited about it at the time. Maybe, like Oracle's 1996 Network Computer thin client, we're finally ready for this technology. http://www.nngroup.com/articles/javaring-wearable-computer/ http://www.nngroup.com/articles/javaring-wearable-computer/ http://javaring.blogspot.co.uk/2008/11/advantages-of-using-java-ring.html http://javaring.blogspot.co.uk/2008/11/advantages-of-using-j... "When an iButton detects any intrusion, it erases its private keys leading to zeroization. With it zeroization capability and the private key, Java Ring is one of the least counterfeitable devices."