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[GH-ISSUE #702] Bug with fingerprint unlock #20165

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opened 2026-04-16 20:02:00 -05:00 by GiteaMirror · 8 comments
GiteaMirror commented 2026-04-16 20:02:00 -05:00
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Originally created by @ddska on GitHub (Jan 17, 2020).
Original GitHub issue: https://github.com/bitwarden/android/issues/702

I'm using Bitwarden Android app (2.2.8) on Android 7 (Huawei Honor 8).
The fingerprint unlock is enabled in the app.
When I launch the Bitwarden app for the first time, I can unlock it with fingerprint successfully.
If I switch to a different app, and then return to Bitwarden, it shows the fingerprint popup ("Use your fingerprint to verify"), but it does not respond to fingerprint sensor.
The only workaround I found is to switch to Android app list and choose Bitwarden app again. After that fingerprint unlock works.
It happens every time I switch to another app from Bitwarden.

Originally created by @ddska on GitHub (Jan 17, 2020). Original GitHub issue: https://github.com/bitwarden/android/issues/702 I'm using Bitwarden Android app (2.2.8) on Android 7 (Huawei Honor 8). The fingerprint unlock is enabled in the app. When I launch the Bitwarden app for the first time, I can unlock it with fingerprint successfully. If I switch to a different app, and then return to Bitwarden, it shows the fingerprint popup ("Use your fingerprint to verify"), but it does not respond to fingerprint sensor. The only workaround I found is to switch to Android app list and choose Bitwarden app again. After that fingerprint unlock works. It happens every time I switch to another app from Bitwarden.
GiteaMirror commented 2026-04-16 20:02:04 -05:00
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@opensourcefan commented on GitHub (Jan 20, 2020):

Same issue here, Samsung Note 8 running Android 9. I just hit "cancel" and select "use finger print to unlock" again. I have noticed that upon reentering the app that I get a brief red flash on the finger print image as if it didn't recognize it. This happens without engaging it of course.

<!-- gh-comment-id:576127703 --> @opensourcefan commented on GitHub (Jan 20, 2020): Same issue here, Samsung Note 8 running Android 9. I just hit "cancel" and select "use finger print to unlock" again. I have noticed that upon reentering the app that I get a brief red flash on the finger print image as if it didn't recognize it. This happens without engaging it of course.
GiteaMirror commented 2026-04-16 20:02:04 -05:00
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@et1n commented on GitHub (Jan 22, 2020):

Same here on Galaxy S9 running Android 9.

<!-- gh-comment-id:576996945 --> @et1n commented on GitHub (Jan 22, 2020): Same here on Galaxy S9 running Android 9.
GiteaMirror commented 2026-04-16 20:02:05 -05:00
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@mKoonrad commented on GitHub (Jan 26, 2020):

I also have this issue

<!-- gh-comment-id:578552076 --> @mKoonrad commented on GitHub (Jan 26, 2020): I also have this issue
GiteaMirror commented 2026-04-16 20:02:06 -05:00
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@vhborges commented on GitHub (Feb 11, 2020):

Same issue here on Android 9.

<!-- gh-comment-id:584681464 --> @vhborges commented on GitHub (Feb 11, 2020): Same issue here on Android 9.
GiteaMirror commented 2026-04-16 20:02:07 -05:00
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@Erik-Bjerke commented on GitHub (Feb 27, 2020):

I have the same issue, but if I cancel the popup and then tap on the "USE FINGERPRINT TO UNLOCK" button, it works. I assume this is not device related but rather something happening upon returning to the app after leaving it in the background.

Edit: it does not happen everytime. I also noticed that when it fails it turns red before I put the finger on the reader. In my case maybe it could be my device but I don't think so because I'm only having this issue with Bitwarden.

<!-- gh-comment-id:592041708 --> @Erik-Bjerke commented on GitHub (Feb 27, 2020): I have the same issue, but if I cancel the popup and then tap on the "USE FINGERPRINT TO UNLOCK" button, it works. I assume this is not device related but rather something happening upon returning to the app after leaving it in the background. Edit: it does not happen everytime. I also noticed that when it fails it turns red before I put the finger on the reader. In my case maybe it could be my device but I don't think so because I'm only having this issue with Bitwarden.
GiteaMirror commented 2026-04-16 20:02:08 -05:00
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@canizarex commented on GitHub (Jun 1, 2020):

I don't have any issues when I change between apps but I've noticed a slightly different problem that seems related.

When I try to unlock the vault with my fingerprint, if the fingerprint is not recognized for some reason, for example, the finger is not correctly placed or I use a different finger, the android pop up says "Not recognized" and after a little while it changes again to "Touch the fingerprint sensor". Then if I try again and the fingerprint is recognized, the Android pop up goes away like you would expect, but the Bitwarden app does nothing, meaning that the vault remains locked.

I have to touch again the "use fingerprint to unlock" button like other comments suggest in order to unlock my vault.

I tested this on a Pixel 3 running Android 10 and it's easily reproducible.

<!-- gh-comment-id:636792077 --> @canizarex commented on GitHub (Jun 1, 2020): I don't have any issues when I change between apps but I've noticed a slightly different problem that seems related. When I try to unlock the vault with my fingerprint, if the fingerprint is not recognized for some reason, for example, the finger is not correctly placed or I use a different finger, the android pop up says "Not recognized" and after a little while it changes again to "Touch the fingerprint sensor". Then if I try again and the fingerprint is recognized, the Android pop up goes away like you would expect, but the Bitwarden app does nothing, meaning that the vault remains locked. I have to touch again the "use fingerprint to unlock" button like other comments suggest in order to unlock my vault. I tested this on a Pixel 3 running Android 10 and it's easily reproducible.
GiteaMirror commented 2026-04-16 20:02:09 -05:00
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@mKoonrad commented on GitHub (Jun 3, 2020):

In new version 2.4.2 (2501) issue is resolved. App use probably any build-in Android code to use fingerprint scanner.

<!-- gh-comment-id:638373368 --> @mKoonrad commented on GitHub (Jun 3, 2020): In new version 2.4.2 (2501) issue is resolved. App use probably any build-in Android code to use fingerprint scanner.
GiteaMirror commented 2026-04-16 20:02:11 -05:00
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@opensourcefan commented on GitHub (Jun 3, 2020):

Works perfect, thanks for the update. Seems much more stable and solid now.
Samsung Note 8, Android 9

<!-- gh-comment-id:638408714 --> @opensourcefan commented on GitHub (Jun 3, 2020): Works perfect, thanks for the update. Seems much more stable and solid now. Samsung Note 8, Android 9
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Reference: github-starred/android#20165
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