QR codes are an alternative to Quick Share's normal modus operandi, which involves the originating device detecting nearby Android devices, Chromebooks, and (in some cases) Windows PC.

Google is working on a change to Android Quick Share that makes using the tools with QR codes even more streamlined.

If you find it inconvenient to share your Android phone’s hotspot details manually, you can create a QR code that others can scan from their devices to connect to your hotspot.

This Quick Share-like app has recently received an update that adds support for sending files from a Mac to an Android with QR codes ...