A Severed finger won’t work on the iPhone 5S

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“The [RF capacitive sensor] technology is built in a way that the [fingerprint] image has to be taken from a live finger,” says Sebastien Taveau, chief technology officer at Validity Sensors, a California based provider of fingerprint sensor solutions. “No one in biometrics wants to talk about cut fingers and dead bodies, but at the end of the day we are still asked to remove the fears of consumer and make sure that they understand that [a severed finger] will not work.”

Of course, this new feature of the iPhone 5S doesn’t rule out instances of victims being forced to use their fingers to access the smartphone, but it does offer some comfort to those worried about worst-case scenarios.

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