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zibs avatar zibs commented on June 22, 2024

I could be wrong, but I think this is baked into how iOS implements Touch ID.

You can reproduce this behaviour simply by trying to log into your phone with Touch ID. If you fail three times, then you have to re-enter your passcode before you can re-enable Touch ID.

It seems to me that if one fails to successfully authenticate after three attempts, iOS disables Touch ID support until the user has re-enabled it by entering in their passcode.

I'd love to know if you know any way around this, or have heard otherwise.

from react-native-touch-id.

stantoncbradley avatar stantoncbradley commented on June 22, 2024

@zibs that makes sense. I tried on another app (LastPass) and after failing to authenticate, it said I could reenable it from Settings, but I didn't see the option. This library does not seem to support re-enabling, would be a great feature. Again, not sure what support for this looks like on the native ios level

UPDATE (5 minutes later lol)
Ok so failing to authenticate in any single app disables touch for all other apps (and iphone itself). to reenable touch id, you need to enter PIN on iPhone unlock screen. This seems reasonable, we will just need to tweak our UI around this behaviour to make it clear to our users what happened and what they need to to do reenable it.

thanks!

from react-native-touch-id.

naoufal avatar naoufal commented on June 22, 2024

from react-native-touch-id.

stantoncbradley avatar stantoncbradley commented on June 22, 2024

@naoufal did you see the update to my comment? not seeing anything relevant in the docs or general google searching. here is the alert from lastpass:
image

from react-native-touch-id.

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