fingerprint sensor

how to retrieve the data received by the fingerprint sensor with Python and store it under a mysql server

Please read the forum rules. Then modify your post. :relaxed:

kanearduino:
how to retrieve the data received by the fingerprint sensor with Python and store it under a mysql server

Well, first, you write a Python interpreter to run on the Arduino. After that, you port the MySQL software to run on the Arduino. After that, the rest is easy.

If you meant "How do I get the data to the PC, so that...", well, that is simple. Just use Serial.print() or Serial.println().

Then, you have a PC problem, not an Arduino problem.