Chaos Computer Club claims it can unlock Iphones with fake fingers/cloned fingerprints

The Chaos Computer Club's biometric hacking team has announced a successful attack on Apple's Iphone biometric fingerprint lock, using a variation on the traditional fingerprint-cloning technique. CCC's Starbug summarizes: "As we have said now for more than years, fingerprints should not be used to secure anything. You leave them everywhere, and it is far too easy to make fake fingers out of lifted prints."

The method follows the steps outlined in this how-to with materials that can be found in almost every household: First, the fingerprint of the enroled user is photographed with 2400 dpi resolution. The resulting image is then cleaned up, inverted and laser printed with 1200 dpi onto transparent sheet with a thick toner setting. Finally, pink latex milk or white woodglue is smeared into the pattern created by the toner onto the transparent sheet. After it cures, the thin latex sheet is lifted from the sheet, breathed on to make it a tiny bit moist and then placed onto the sensor to unlock the phone. This process has been used with minor refinements and variations against the vast majority of fingerprint sensors on the market.

"We hope that this finally puts to rest the illusions people have about fingerprint biometrics. It is plain stupid to use something that you can´t change and that you leave everywhere every day as a security token", said Frank Rieger, spokesperson of the CCC. "The public should no longer be fooled by the biometrics industry with false security claims. Biometrics is fundamentally a technology designed for oppression and control, not for securing everyday device access." Fingerprint biometrics in passports has been introduced in many countries despite the fact that by this global roll-out no security gain can be shown.

Chaos Computer Club breaks Apple TouchID (via Hacker News)

Notable Replies

  1. "It is plain stupid to use something that you can´t change and that you leave everywhere every day as a security token. The public should no longer be fooled by the biometrics industry with false security claims. Biometrics is fundamentally a technology designed for oppression and control, not for securing everyday device access."

    That sums it up so beautifully.

  2. The response is out of scale to the thing. You can also spy on someone and get their pin. It seems to me about the same. We are not talking arming codes for missiles.

    This fascination with personal privacy is starting to seem like an extension of the narcissistic culture we live in.

  3. xof says:

    Shorter: "Single-factor authentication remains insecure."

  4. You can change your PIN if it's compromised.

  5. I think you missed my point. I'm not talking about the hash of your fingerprints. I'm talking about the fingerprints you leave all over the surface of the phone.

Continue the discussion bbs.boingboing.net

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