Scan a menu, pay a bill, onboard a smart plug, and you are using a piece of technology that was never meant for any of those things. The QR code was invented in 1994, and its original job was tracking car parts on a factory floor. Understanding why it was built the way it was explains why it no...
Source: [Dev.to](https://dev.to/fluidwire/the-qr-code-was-invented-in-1994-to-track-car-parts-29h7)