Sometimes phone asks for passcode instead of fingerprint

[SMYDSMITH]

I have fingerprint set but sometimes it asks for passcode randomly. Why?

Sent from my Moto Z (2) using Tapatalk

 

[me just sayin]

some phones does it for security purposes. my phone will ask at power on and off. in addition sometimes it will ask when the fingerprint don't match or when touching the screen when picking it up

 

[Sajo]

From the Google support site for Android Fingerprint unlocking:

Sometimes, use your backup method

For security, you'll unlock with your backup PIN, pattern, or password after:

Your fingerprint isn't recognized after a few tries

You restart (reboot) your phone

You switch to a different user

More than 48 hours have passed since you last unlocked using your backup method


Unlock with your fingerprint - Pixel Phone Help


Sent from my XT1650 using Tapatalk

 

[SMYDSMITH]

From the Google support site for Android Fingerprint unlocking:

Sometimes, use your backup method

For security, you'll unlock with your backup PIN, pattern, or password after:

Your fingerprint isn't recognized after a few tries

You restart (reboot) your phone

You switch to a different user

More than 48 hours have passed since you last unlocked using your backup method


Unlock with your fingerprint - Pixel Phone Help


Sent from my XT1650 using Tapatalk

I think the fingerprint sensor sometimes detects bumps in pocket as being pressed as an incorrect fingerprint and gets enough bumps to ask for pin.

Sent from my Moto Z (2) using Tapatalk

 

[me just sayin]

I think the fingerprint sensor sometimes detects bumps in pocket as being pressed as an incorrect fingerprint and gets enough bumps to ask for pin.

Sent from my Moto Z (2) using Tapatalk

i can see that happening, as long as its not calling 911