Visit to a cashier-less, employee-less convenience store in China

Scotty of Strange Parts went to an employee-less convenience store in Yiwu, China. To enter it, he scanned a QR code on the outside of the building and the door unlocked. Inside, it looks like a tiny 7-Eleven. Everything in the store has RFID stickers on them. You select the items you want and put them on a sensor pad. A QR code appears on a display -- you scan it and that's how you pay.

After visiting, Scotty goes back to his place in Shenzhen and examines the RFID stickers under his microscope.