The biometric “on-card comparison” system compares a signature against one stored on the card (Photo: Fraunhofer IGD)
If you watch a handwriting expert authenticate a signature, they will talk about echoes of the process of signing one's name – darker or lighter lines reveal pressure variations, the shape of the loops reveals the shaking of the hand, and the flow of the ink shows if the signature was laid down without hesitation. These echoes of the act of writing make a signature far more revealing than a simple squiggle on paper. Now researchers from the Fraunhofer Institute for Computer Graphics Research (IGD) have created a credit card that contains a thorough description of these signature traits, which can be used for instant authentication.
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