Does the fingerprint scan really work?

Discussion in 'Theme Parks Attractions and Strategies' started by kay1864, Sep 20, 2013.

  1. kay1864

    kay1864 DIS Veteran

    Mar 3, 2010
    A work colleague swears that he tested the fingerprint scan by swapping tickets with his wife, and they both got the green light at the turnstile.

    Any DISers ever (accidentally or intentionally) switched tickets, and couldn't get through the turnstile? Or could?
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  3. ghtx

    ghtx DIS Veteran

    May 29, 2012
    Switching tickets WITHIN a party (e.g. switching with your wife) is allowed.

    Switching BETWEEN parties (e.g. you buying someone else's ticket on the street corner and trying to use it) is not allowed.
  4. Hulkling

    Hulkling Earning My Ears

    Jul 25, 2013
    My sister and I had identical paper APs once, and could not get in using each other's pass. Also my mom once had a cut on the finger she had used, and we had to go to guest services to get her into the park.
  5. FlowerInAdversity

    FlowerInAdversity Earning My Ears

    Sep 13, 2011
    If you guy your tickets in a group, they're all linked together. On the old turnstiles, it would tell the cast member if another person in the party was using it, but it still works!
  6. mcd2745

    mcd2745 These Mickey pretzels are making me thirsty!

    Jul 11, 2010
    I thought this was going to be about the new iPhone.
  7. Dannek

    Dannek So many roads to ease my soul...

    May 3, 2013
    The fingerprint scanners work properly.

    Last week my girlfriend couldn't remember which finger she used during our trip on June. On our first park day last week, she got denied twice for using the wrong fingers before I remembered she used her right thumb on our last trip and upon trying that, it worked and passed her.
  8. HopperFan

    HopperFan "It's a bug-eat-bug world out there, princess."

    Sep 6, 2003
    We got magicbands and it knew our fingerprint on our AP card. We needed to switch from the fingers to the thumb we used on old card. Several times DS did not have his finger in well and it denied him (blue light). Just saying in our case it was looking for an exact match.
  9. bwang123

    bwang123 Posts: 1,457,177,981

    Apr 10, 2012
    maybe they should make them match against blood samples then your mom's open sore would have worked.
  10. Cheshire Figment

    Cheshire Figment <font color=red><marquee behavior=alternate>Friend

    Jan 12, 2001
    If you go to the locked sticky Everything About WDW Tickets in this Forum, especially Post #14, you can get a lot more information. An easy way to get to the sticky is by clicking on the link in my signature. The ticket sticky is your friend!
  11. 11290

    11290 DIS Veteran

    Mar 31, 2007
    It's a biometric scanner, NOT a fingerprint scanner, does not read fingerprints, just the shape of your finger.

    It is much more accurate (higher resolution) with the new touch-point entries than it was with the legacy turnstiles.
  12. doconeill

    doconeill Fastpass Jedi Master DIS Lifetime Sponsor

    Feb 11, 2007
    It isn't the shape of the finger, but the "shape" of the fingerprint.

    "Biometric" just means it is converting some sort of biological identification to a numeric value for comparison. It could be a finger scan, geometry scan (i.e. shape of finger, or really bone structure in the fingers - the old system did that), retina scan, DNA, pheromones, quantum state, etc. :)

    The type of scanners in use DO use a scan of the fingerprint. But it isn't doing a full image comparison of it - that would be slow and require more data. Instead, it is looking at the ridges of the fingerprint, identifying prominent points (the folds, bifurcations, loops, etc.), picking several, and creating a geometric model that is then turned into a numerical value - typically 4-5 digits, depending on tolerance for duplicates. It can do this relatively fast and accurately with a low chance of a false negative (although obviously finger problems will cause issues).

    The finger scanners that are becoming prevalent on laptops work very similarly (well, the software used to compare against a stored value does), although instead of an optical sensor, it is a capacitance sensor that you drag your finger across. Think of it as being like a document scanner, one line at a time...
  13. Hootch

    Hootch DIS Veteran

    Mar 4, 2006
    thought of the Disney scanners when the news reports were coming out about the IPhone fingerprint recognition. People are worried about the scanners being too particular and giving false negatives. The experts guessed that the system would be designed to have more false positives than false negatives.

    The Disney system is designed, I believe, the whittle it down to one out of a thousand - not an exact match. That would seem to be a sufficient deterrent for Apple. I would not pay big money for a one in a thousand chance of it working.

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