comments:
thedutchbag posted on r/evcharging6w
I believe that Autel Maxicharger may work without Wifi, and has RFID cards. Is a bluetooth app too complicated? You can email Autel, and they should know for sure, but I believe you can register RFID cards via Bluetooth on a phone app when near the charger by tapping a new key and hitting "Add". Then, give everyone an RFID keychain, write a number on it, keep track on a spreadsheet or piece of paper with the corresponding tag #, # in the app, and who owns it. Whenever replacing a keyfob or removing it, remove it from the charger as well. I believe these would work