I am a student. I am making a project with RFID card.
My project is Ticket System. With a Master Card, I want to allow others card as a customer.
Here is my problem start. I want to allow for a card for only 5 times after register.
My reference code is from Arduino software/Expample/MFRC522/Access Control.
I am trying to learn EEPROM too. But I cann't do this yet.
Please help me out.
Sorry for bad English writing