Fingerprint multiple devices

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Is it possible to register a fingerprint on one android device and verify it on another android device?

What I have tried:

I know that i can use an external fingerprint scanner to register and then verify the fingerprint using the android device. But is it possible to register and verify on two separate android devices?

Posted 12-Sep-16 6:57am

BEBE2011

Updated 16-Sep-16 1:29am

Sean Ewington

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[no name] 12-Sep-16 15:09pm

It all depends on your architecture, your devices, how they are connect and your ability. Which you have already discussed in your same, vague, not-a-question that you posted earlier.

Dave Kreskowiak 12-Sep-16 16:13pm

AFAIK, Android devices do not share a common authentication authority. Each device only trusts itself as a credential (in your case, fingerprint) provider. So, in short, no they can't share fingerprints between them.

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Wessel Beulink · Answer 1 · 2016-09-16T00:40:00

The only way to use multiple fingerprints is to save the intent data and use it in your own authenticate. So you can verify it by the activity if the user scan is equal to one of the datas from that user.

protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        if (resultCode == RESULT_FINISHED) {
            // do something with the intent data. 
            // and hash or save it somewhere in your extern authentication system.
            // intent.getData(); => always equal to previous scans
            finish();
        } else {
            super.onActivityResult(requestCode, resultCode, data);
        }
    }

You need to create at the and a userid with multiple scan ids which are valid for the user.

Patrice T · Answer 2 · 2016-09-16T01:29:00

Quote:
Is it possible to register a fingerprint on one android device and verify it on another android device?
...
But is it possible to register and verify on two separate android devices?

Yes to both questions, as soon as they can communicate.
Anything possible on a android device os possible on 2 if they can communicate. It is a matter of design of your app.

Fingerprint multiple devices

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