QR codes are not magic — here's the simple physics of how they work.
中文摘要
二维码并非魔法，其工作原理基于简单的物理学。
English Summary
QR codes aren't magic; their function relies on basic physics principles.
Original Excerpt
People treat QR codes like black boxes: you generate one, it works, or it doesn't. But there are real reasons why some codes scan in under… Continue reading on Medium »