What are the open source libraries for biometrics?

Question

Algorithms

I found many commercial products on the net for processing biometric data from various scanners, but an open source solution is required for processing fingerprints, face shapes, eye irises, etc.
Prompt such solutions, preferably under Linux.
Thank you.

Answer 1

You would decide on a direction. By the way, what is meant by "and others"? Interesting.
Is open source free? For example, the Chinese sell a fingerprint scanner . We can assume that the program is free. The code, however, is hidden, so you won't recognize the algorithm.
The word "entrepreneur" in your question is alarming. Any approach - to solve with a swoop. In each case, you need to know the algorithms (they are hidden, of course) and the hardware.