Raspberry Pi based fingerprint authentication for a large database

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I am building a student attendance system using a fingerprint sensor. However, all off-the-shelf fingerprint sensors only support a maximum of around 100 fingerprints on the device flash itself.

In some of the fingerprint sensors I have used, I am able to get the finegrprint "template" off the device (for ex in the: R305 and GT-511C3)

Is there any way for me (open source) to match the minutiae "templates" from these sensors in the cloud or even on the pi itself.

Or even a way to upload previous matches into the fingerprint sensor flash dynamically (say, in sets of 60 fingerprints, as I would require only 60 per class)

I can provide code to read the sensor, but it is mostly based of Adafruit Library on github.

Here is the sample output in hex that someone online received from the sensor:

EF, 1, FF, FF, FF, FF, 2, 0, 82, 3, 1, 5F, 25, 0, 0, FE, 
3E, FC, 2, F8, 2, F0, 0, F0, 0, F0, 0, E0, 0, E0, 0, E0, 
0, E0, 0, E0, 0, E0, 0, E0, 0, E0, 0, E0, 0, E0, 0, E0, 
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 
0, 64, 11, E4, FE, 6C, A0, A6, BE, 25, 23, 67, DE, 3C, AA, D1, 
3E, 71, AF, 67, 9E, 3B, 3F, E7, 9E, 3D, B, 50, 7F, 58, 34, 51, 
7F, 27, BB, A6, FF, 24, 41, D0, 5F, 59, 8, 63, 94, 5C, B, A5, 
9C, 33, 39, 67, BC, 73, 13, E4, 75, 74, 10, 4C, 7A, 2B, 1B, CF, 
32, 38, B1, D1, 3A, 36, BC, 11, 1A, 2F, BB, EF, 1, FF, FF, FF, 
FF, 2, 0, 82, 33, 8E, 27, 7B, 6C, C, 4E, 18, 35, 11, 10, 72, 
32, 12, E6, F2, 38, 1E, 8E, F8, 3C, 35, 51, 78, 28, 1E, 66, D3, 
33, A2, E6, 99, 40, 35, E7, F9, 6E, 8D, E2, F6, 2C, 34, D1, 70, 
34, 16, E6, 34, 3B, 96, CF, 8E, 40, 25, 26, B4, 32, 2F, A7, D4, 
36, 24, 8F, F2, 28, 36, 91, CD, 26, 2E, EB, 50, 26, 31, 14, B1, 
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,

Any help is appreciated.

2

There are 2 best solutions below

1
On

I know only one open-source solution for this, it's the SDK provided by NIST for fingerprint recognition: NBIS.

You could downloaded here.

1
On

Yes you can do it, but there is some problem. It is easy to save fingerprint template to a file or database in hex format. Even you can match 2 templates. But the problem is how to download templates from database or file back to R305.