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.
Your project is super cool and really well executed. Thanks for sharing. I’ve had success with cheap blank NFC cards instead of the official MyYo York cards. I have a quick breakdown in my recent comment history if you’re curious.
