Hex

I needed a way to convert HID ISO prox card numbers (facility code and ID) to hex for use with our Konica Minolta printers. This was to save us from having to enter “hex trace” mode on the printer every time we wanted to add a new card to an employee’s AD account for card-based printer authentication. Additionally, I needed a way to decode from the Konica hex back to decimal so that I could verify card numbers.