Are the IR dots continuously there?

Discussion in 'iPhone' started by virginblue4, Nov 7, 2017.

  1. virginblue4 macrumors 68000

    virginblue4

    Joined:
    Apr 15, 2012
    Location:
    United Kingdom
    #1
    I was under the impression that the true depth camera system only operates whilst using Face ID (unlocking, Apple Pay etc) and whilst using Animoji.

    However, I then wondered how the attention features worked i.e. not dimming the display while looking at it and reducing the volume of alerts.

    Apple state on their website:

    ‘Even if you don’t enroll in Face ID, the TrueDepth camera intelligently activates to support attention aware features, like dimming the display if you aren't looking at your iPhone or lowering the volume of alerts if you're looking at your device. For example, when using Safari, your device will check to determine if you're looking at your device and turns the screen off if you aren’t. If you don’t want to use these features, you can open Settings > Face ID & Passcode and disable Attention Aware Features’.

    I’m not worried about the health concerns around Face ID as I personally don’t believe it to be an issue. I’m just curious how it works.

    Anyone with more info?
     
  2. HEK macrumors 68040

    HEK

    Joined:
    Sep 24, 2013
    Location:
    US Eastern time zone
    #2
    No they only burst when Face ID is identifying
     
  3. virginblue4 thread starter macrumors 68000

    virginblue4

    Joined:
    Apr 15, 2012
    Location:
    United Kingdom
    #3
    So how does it know I’m looking directly at the display and not to dim it?
     
  4. HEK, Nov 7, 2017
    Last edited: Nov 7, 2017

    HEK macrumors 68040

    HEK

    Joined:
    Sep 24, 2013
    Location:
    US Eastern time zone
    #4
    Looks for your eyes with cameras. The dots are for Face ID mapping in 3D. Multiple things going on here. Unlock uses full gambit of sensors to generate math to compare to stored math of your Face. Attention monitoring looking for your eyes viewing screen. That feature can be turned off separately.

    Much more complexity than any previous Face recognition in other phones.
     
  5. virginblue4 thread starter macrumors 68000

    virginblue4

    Joined:
    Apr 15, 2012
    Location:
    United Kingdom
    #5
    Makes sense. Do you know this 100%?

    It would be good if they guy who created the thread showing the IR dots on his face tried this out.
     
  6. HEK macrumors 68040

    HEK

    Joined:
    Sep 24, 2013
    Location:
    US Eastern time zone
    #6
    Know it from viewing videos and reading all the information about how it works, sequence of operations.

    IR flood illuminator, IR camera, front facing camera, IR dot illuminator.
     
  7. richard371 macrumors 68020

    Joined:
    Feb 1, 2008
    #7
    They are actually lasers and are not always on
     

Share This Page

6 November 7, 2017