Is it possible to identify multiple fingers?

[AndroidDeveloperLB]

For example, if finger 1 is scanned do something, and if finger 2 is scanned, do something else?

[AndroidDeveloperLB]

BTW, the sample here
http://developer.android.com/samples/FingerprintDialog/index.html
doesn't work like the reop here.

[thagikura]

Hi,

It's not possible. Registered fingerprints are treated equally.

[AndroidDeveloperLB]

Why ? It could be cool...
For example, I could set that each would do something else.
I could even make a gesture if the fingerprint sensor supports it... :(

[thagikura]

Because each registered fingerprint can unlock device for the account who registered the fingerprint equally. At least for now, these are treated as equally.

Maybe in the future, there is a change that identify multiple fingerprints. But current Android M doesn't support it.

[AndroidDeveloperLB]

Can you please consider adding it?
It could even be cool as non-secure feature, so that for the foreground app, you could choose to have events for what happens for each type of finger.
It could also perform tasks via the lock screen itself : call a specific person, open Google,...

[mariotaku]

@AndroidDeveloperLB Actually it's possible (through hidden API). See FingerprintManager.java#258 .

[AndroidDeveloperLB]

Cool, but using it might break in future releases.

[dientm]

I am sorry for reopen this thread, I got a problem that I have to identify which fingerprint (registered) is scanned? For now I don't know is android support, or how to implement using hidden API? Can anyone give me an idea?

[mariotaku]

@dientm Using reflection.

[dientm]

@mariotaku: thank for your reply but actually I dont have to much experience with android. Can you show me some example of reflection in android?

[mariotaku]

@dientm https://code.tutsplus.com/tutorials/learn-java-for-android-development-reflection-basics--mobile-3203

[poongodi90]

@dientm u did this multiuser fingerprint authentication?

[ZarSaeed]

Please tell me have you solved your issue if yes than how?

[sohambannerjee8]

I am also looking for this solution.

[AndroidDeveloperLB]

OK I wrote a suggestion about this here:
https://issuetracker.google.com/issues/112066297

[codingjeremy]

I am closing this issue/PR, as it has been migrated to the new repo linked above in the comments. Thank you!

[AndroidDeveloperLB]

Thanks. Sadly it was closed to open a new one, so made it here:

https://issuetracker.google.com/issues/140661939