You can use bulk nfc cards from China. I got like 50 cards for five bucks or so. Taking them into use is a bit more laborious (you have to record an official ca

You can use bulk nfc cards from China. I got like 50 cards for five bucks or so. Taking them into use is a bit more laborious (you have to record an official card first and then duplicate the tag to a bulk card), but considering the price is a no brainer.