They all have a chip. The kind used here are commonly called tags. https://www.huayuansh.com/uniqlo-global-stores-applied-rfid-tags/ https://www.huayuansh.com/

They all have a chip. The kind used here are commonly called tags. https://www.huayuansh.com/uniqlo-global-stores-applied-rfid-tags/ https://www.huayuansh.com/uniqlo-global-stores-applied-rfid-...