I document my experiment code here. So I will find it next time when I need it. Code Demos: Links: https://taunoerik.art/2023/10/09/notes-about-arduino-rfid-readers/ https://taunoerik.art/2023/09/26/nfc-ja-ntagid/ https://taunoerik.art/2023/09/22/nfc-tags-on-artwork/