Connecting a HID Prox Pro II RFID reader to Arduino

Arduino based RFID reader projects are a dime a dozen. It’s great and wonderful how plentiful and easy they are. Checking out Adafruit or Sparkfun one can find dozens of cheap components that are almost ready to go. The common factor is that they are all 13.56Mhz or Mifare compatible. Nominally this means cheap (And plentiful) components and fobs, but it also means that the systems aren’t compatible with most...