It will ask me for a PIN once-an-hour, regardless of my smart lock settings.
My lock screen app always makes me enter my pattern after the fingerprint wakes the phone. Very handy if I want it locked as I have a Smartwatch as a trusted device.
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I was thinking the same thing, are you tied to some exchange account?Could be forced by a corporate mdm solution, assuming you use your 6P as a work phone. That's the only thing I can think of.
Thanks a lot dude, that seems to fix the problem.I think I know what's happening. It was happening to me. I was using the trick with nova launcher and another app to be able to lock my screen by double tapping it. After I did away with it the behavior stopped. I've gone an entire week without rebooting my phone and in that time not once was I asked for pin. Now pin is only required after reboot, as it should be.
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That's funny that Google's Nexus Help doc says 48 hours, when the source code seems to indicate 72 hours:Unlock using your backup screen lock method
Sometimes you might need to use your backup PIN, pattern, or password:
When your fingerprint isn't recognized after a few tries
After restarting your device
After switching to a different user on the device
After more than 48 hours have passed since you last unlocked using your backup method
https://support.google.com/nexus/answer/6285273
/**
* Milliseconds after unlocking with fingerprint times out, i.e. the user has to use a
* strong auth method like password, PIN or pattern.
*/
private static final long FINGERPRINT_UNLOCK_TIMEOUT_MS = 72 * 60 * 60 * 1000;
If it doesn't feel like unlocking with my fingerprint, this closed padlock will appear at the bottom of my screen.
View attachment 208803
My phone will unlock if use lock icon is replaced with an unlocked padlock, fingerprint, or face.
I'm just guessing here but I think it's simply a security feature. It will always ask for the PIN after fingerprint after a fresh reboot, and then will only ask occasionally after that when the phone is unlocked from screen-off (not rebooted). I see it roughly every few days.
I think I know what's happening. It was happening to me. I was using the trick with nova launcher and another app to be able to lock my screen by double tapping it. After I did away with it the behavior stopped. I've gone an entire week without rebooting my phone and in that time not once was I asked for pin. Now pin is only required after reboot, as it should be.
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This is from help on the feature.