Full article at The New York Times
"Qualcomm, one of the two chip makers, is expected to say it has developed a kind of sonarbased way to read fingerprints through glass, plastic, and some metal. That is a dramatic improvement over most popular fingerprint authentication methods. The sensor can be placed on either side of a mobile phone, and by reading deep into the skin, noting the difference between the peak and trough of a fingerprint, should be harder to defeat. “You can’t use glue to make a spoof fingerprint,” said Tim McDonough, vice president for product marketing at Qualcomm."
