DailyDirt: Passwords? We Don't Need No Stinkin' Passwords

from the urls-we-dig-up dept

Fingerprint-based biometric security systems are everywhere now, but there are some well-known problems with using your fingerprints instead of a password. First off, you unconsciously leave copies of your fingerprints just about everywhere you go. Still, fingerprint sensors seem to be getting better and better. I'll stick to my 4-digit PIN for now, though, thanks, but if you like using your finger for your digital locks, check out these links. If you'd like to read more awesome and interesting stuff, check out this unrelated (but not entirely random!) Techdirt post via StumbleUpon.

Filed Under: biometrics, fingerprint, fingerprints, identification, passwords, pin, security, sensors
Companies: qualcomm, vkansee


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  1. icon
    John Fenderson (profile), 13 Mar 2015 @ 8:15am

    Re: Are fingerprints really unique?

    The exact pattern of your fingerprints are not coded for by your DNA, so there's a very large arbitrary and/or random component to them. It's a bit like assigning a random number to every human. There's no guarantee that each will be unique, but the odds of two being identical are very, very tiny.

    "To prove it, you would have to compare all fingerprints with all other fingerprints and come up with no duplicates"

    No, there's no need to go that far to prove it. And this issue about fingerprints has been very well studied. The usual figure cited for the odds that two people have the same fingerprint (for a single finger) is 1 in 64 million.

    However, due to the fact that fingerprint matching is not done by comparing entire fingerprints means that the odds of two people having their fingerprints being judged as the same are around 1 in 50,000 (depending on the exact method being used).

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