How to store fingerprint in database?

Question

Python

Hello, I want to write an application that provides information about a person based on his finger biometrics.

For example, a person put a finger, the data was sent to the server, the server gave out that this was such and such a person and gave out information about him.

I am now writing in the Dart + Flutter language and I want to get biometrics when a person puts a finger, as a result, as I understand it, I should get some kind of long string or json set, please explain what I should get as a result and how to get it? It would be nice to understand how to recognize it later on the server, there, in principle, I think you can already use Python with a huge set of libraries for this business.

Basically, I now need to get something to convert and send

Answer 1

You haven't written the main operating system. And so look for biometrics api os name. Sensors usually spit out a blob that the api is already processing, giving an answer whether it is in the database.

Answer 2

I don’t know how things are in reality, but it’s logical to assume that a fingerprint is some kind of identifier akin to a hash sum. And storing such a short identifier in the DBMS with related information (JSON or whatever) should not be a problem.
Identifying a person is getting that ID and matching it with the information in the DBMS.

Answer 3

No way. Biometrics is classified information. All you can do is request biometric authentication via the API. In this case, the data itself will not be obtained.

Answer 4

Save as svg image then save to db xml code of svg file