I am developing a door lock using USB RFID and raspberry. I searched and almost all the python scripts I found with familiar code have the following variable keys. So can someone explain to me why they use it or why I have to use it too. Thank you in advance. python code image
On a quick research from the official documentation of Raspberry pi
It is a default authentication key which you were looking at those forums. These keys are used for testing purposes but in the live products they use different ways to authenticate by scanning the RFID. Here is one example that is good for starters to understand how RFID scanning works.
