Beepcard
New Scientist reports on Beepcard, a credit card that will not work unless it hears its owner's voice.
More about Beepcard in Bruce Schneier's latest Crypto-gram newsletter.
New Scientist reports on Beepcard, a credit card that will not work unless it hears its owner's voice.
More about Beepcard in Bruce Schneier's latest Crypto-gram newsletter.
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