[pjmorris]

I sat in a coffee shop ~5 years ago, and sketched out what a lost-and-found system based on QR codes and QR code readers. My particular application was 'Non-verbal kid lost at mall, kindly smartphone user with QR reader scans (branded) QR code on kid's shirt to get parent's contact info', but I saw no reason why that couldn't work for any item large enough to have a QR code painted/sprayed/stapled on. I don't know why this doesn't exist yet.

[icebraining]

My mother just wrote her phone number on the tag of my brother's shirt. What's the point of the QR code?

[deserted]

Two benefits I can see:

- The parent can change what the QR code points to at any time.

- You can scan a QR code from a distance without making physical contact.

[deserted]

This actually does exist already[1]. They sell a ton of products with a user-specific QR code. Parents/caregivers/etc. can change the message that gets displayed when someone is scanned at any time.

[1] https://www.qrcodeid.org/