I'm investigating about what would be a valid approach in order to provide a method to verify a user operation by his signature. The application must verify the user through it's fingertip signature, upon a particular action to be executed by him.
For the record, the user wil be previously signed in to the platform, this signature would be srot of a second factor authetication.
So far, I got two approches in mind:
The first one is not really good: Custom Vision. This service is for classification, not verification, so it's a dead end.
On a second approach, I found MatLab exercises claiming to have a solution, this youtube video explain (which seems to be quite experimental and unofficial).