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Cellphones Security Yahoo! Technology

Turning a Smartphone Display Into a Biometric Scanner 16

New submitter jan_jes writes: Recent mobile phones integrate fingerprint scanners to authenticate users biometrically and replace passwords, making authentication more convenient. Researchers at Yahoo Labs have created a new technology called "Bodyprint," which turns your smartphone's touchscreen display into a biometric scanner. It allows the touch sensor to scan users' body parts (PDF) such as ears, fingers, fists, and palms by pressing them against the display. Bodyprint implements the four-eye principle for locking sensitive documents — accessing the document can require the presence of two or more people involved with the project. Another application is authenticating a user to answer a call by scanning their ear pressed against the phone.
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Turning a Smartphone Display Into a Biometric Scanner

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  • coming to a club near you.
  • by Anonymous Coward

    Fingerprint scanners and other biometric authentications are a joke. To reduce false negatives they have to reduce the sensitivity, which makes the false positive rate around 1/200, which is the security of a 2-letter password.

    • Re: (Score:2, Interesting)

      by Anonymous Coward
      Yeah, but the difference is that a 2-letter password can be cracked by a single person. With this biometric thing, you have to go find 200 different people to press the phone up to their ears.
  • by abulafia ( 7826 ) on Saturday April 25, 2015 @11:45AM (#49551053)
    Not that losers need another reason to whip it out, but this has potential for demanding proof of all those '11" uncut' claims.
  • fingers, fists, and palms

    Does she, indeed?

  • by Anonymous Coward

    They haven't even considered the possibility of hacking it with, say, a 3D-printed ear. Fingerprint scanners are routinely hacked. This seems even easier because all you need is a 3D scan or a few photos of someone's ear.

  • by Etherwalk ( 681268 ) on Saturday April 25, 2015 @01:31PM (#49551425)

    Shouldn't a four-eye principle require two ordinary people or one person with glasses? (Contact lenses obviously don't count.)

    (As a side note, it's hard to believe that was ever really a slur).

    • Not to be confused with the Five Eyes principle, which means that the government's just going to read it anyway.

  • It allows the touch sensor to scan users' body parts... Is it just limited to ears, fingers, fists, and palms? Does it have to be your body part? Honey, bend over, I need to unlock my phone.

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