Touch ID or thumbs' bug?

Discussion in 'iPhone' started by thanpag, May 1, 2015.

  1. thanpag macrumors newbie

    Joined:
    Sep 22, 2014
    #1
    A colleague of mine bought a new iPhone 6 and he asked me how come both of his thumbs work perfectly on touch ID even tough he had scanned and registered only his right one. I tried it on my iPhone 6 and it doesn't work; I have to scan and register both my left and right thumbs individually. Are his thumbs uniquely identical or any of you had a similar experience?

    https://youtu.be/hv8U_dhbI0c
     
  2. Newtons Apple macrumors P6

    Newtons Apple

    Joined:
    Mar 12, 2014
    Location:
    Jacksonville, Florida
  3. thanpag thread starter macrumors newbie

    Joined:
    Sep 22, 2014
    #3
    OR pulling a finger

    [​IMG]
     
  4. swordfish5736 macrumors 68000

    swordfish5736

    Joined:
    Jun 29, 2007
    Location:
    Cesspool
    #4
    it's possible when setting up his right thumb he either purposefully or accidentally placed his left thumb on the reader.

    When you are with him have him remove all fingers from Touch ID and setup the thumb again.
     
  5. thanpag thread starter macrumors newbie

    Joined:
    Sep 22, 2014
    #5
    I believe iOS doesn't allow to mix fingures up during the scanning and registration process. Let's try it out though; video comming up
     
  6. swordfish5736 macrumors 68000

    swordfish5736

    Joined:
    Jun 29, 2007
    Location:
    Cesspool
    #6
    Pretty sure it does.
     
  7. thanpag, May 1, 2015
    Last edited: May 1, 2015

    thanpag thread starter macrumors newbie

    Joined:
    Sep 22, 2014
    #7
    It does indeed! Do you think this is normal? Should it distinguishes between fingers...? If not, why the 5 finger slots in the options???

    Two finger mix
    https://youtu.be/CJDRu2nXfjs

    Three finger mix
    https://youtu.be/ZdU8wCDjx6k
     
  8. adamhenry macrumors 65816

    adamhenry

    Joined:
    Jan 1, 2015
    Location:
    On the Beach
    #8
    Using two fingers works by design. During the registration process you are told to shift your grip and resume. This has to be done to allow for different angles of the finger during a scan. A different angle makes a significantly different print from a static readers standpoint.
     
  9. thanpag thread starter macrumors newbie

    Joined:
    Sep 22, 2014
    #9
    Where is it stated that two fingers work by design? As you are correctly pointing out, the different angles registration improves the recognition success rate of each of the scanned fingers.
     
  10. adamhenry macrumors 65816

    adamhenry

    Joined:
    Jan 1, 2015
    Location:
    On the Beach
    #10
    The works by design phrase is my opinion. It seems to me that from a static readers point of view that two different angles are nearly as different as two different fingers. I could be wrong though. Just thinking aloud.
     
  11. C DM macrumors Westmere

    Joined:
    Oct 17, 2011
    #11
  12. Newtons Apple macrumors P6

    Newtons Apple

    Joined:
    Mar 12, 2014
    Location:
    Jacksonville, Florida
    #12
    No way the phone knows what finger or thumb you are registering. How would it? The graphic you see is for us humans to keep track of what we have registered, the phone could care less.
     

Share This Page