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my dad had one of these, avenger_jcc- He types in a password on the card, and the card spits out a generated password back. Pretty cool stuff, even if you lose the card you still need the password....

This reminds me of the captain crunch whistle hack. Thats where the name 2600 came from, the frequency of the whistle that allowed you to make free calls on payphones.

As for voice passwords, my...