[Face ID] Plex does not re-verify face id on IOS devices after the first time

Plex Players Mobile Devices
1

ios: 15.4.1
plex: 8.1

I re-installed Plex in order to unselect the Discover option in the sources and now I found out that Face ID for my account only triggers on the first time. Any subsequent opening/switching users in plex lets me in right away, even if user switching.

Prior to the re-install the face id always did a verification every time the main user was selected (as it should).

Note: when only using passcodes (not face id) it prompts every time for the pin. I also checked by turning the device away/covering the camera (to make sure it just wasn’t really quick) and it still lets me in.

Steps to repo…

  1. have managed users setup on the server
  2. re-install the plex app
  3. setup the sources, etc.
  4. setup face id for the main account
  5. from the switcher, select the main account…Face ID will be verified as expected
  6. switch to another user and then back to the main account…let in without verification by Face ID
  7. close the app (but leave it in the background/memory)
  8. open plex and select the main account…let in without verification by Face ID
  9. close plex out of memory (i.e. swipe up in the iOS task switcher) and repeat step 8…Face ID will be verified as expected (as technically this would be the first time since the app was launched)

Is there something I am missing here, like a new setting? Is there some setting regarding when Face ID should be used (e.g. immediately, after some time, etc)?

I have checked the main account and Automatically Sign In is disabled.

When I checked the security settings in iOS for this, Require Attention for Face ID is on and Require Passcode is set to immediately.

Also note…I am currently testing to see if there is some sort of timeout on this…e.g. after 10+ minutes if I try again does it prompt for Face ID or not. If so, is there maybe a caching mechanism?

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Update

I do notice that if I leave plex closed for about 15-20 minutes, when I re-open it (and it is still in memory/the iOS task switcher), Face ID does trigger the verification again.

This seems to indicate there is some sort of short term caching going on.

I did check to see if this behavior is iOS wide with other apps enabled with Face ID but they all work every time. This appears to be plex-specific :frowning:

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