A credit card that will not work unless it hears its owner’s voice could become an important weapon in the fight against fraud.


The card requires users to give a spoken password that it authenticates using a built-in voice-recognition chip. The idea is to prevent thieves using a stolen card or fraudsters using someone else’s credit card details to buy goods online.



A prototype built by engineers at Beepcard in Santa Monica, California, represents the first attempt to pack a microphone, a loudspeaker, a battery and a voice-recognition chip into a standard-sized credit card.



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