A developer built an experimental file transfer system by QR
A developer has created a proof-of-concept data transfer system that shuns any dedicated app requirement and neatly sidesteps mandatory networking, pairing, or giving permissions beyond camera access. Instead, the method transmits information between devices by streaming data via rapidly updating QR codes at up to 60 FPS via the browser your smartphone already has. The test info shared by developer bashalarmistalt on GitHub backs claims that these transfers can run at up to 190 KB/s. This low-friction two-device screen-to-camera data transmission technique is dubbed Decimen Optical Transfer: fountain-coded QR file transfer.
A developer is developing an open-source project called "Decimen" that allows file transfer between two phones using only the screen and camera, without Wi-Fi, Bluetooth, or direct pairing.
The sending phone displays a rapid series of animated QR codes, which are then captured by the receiving phone's camera and reconstructed into the file. According to the project's GitHub page, transfer speeds in one test reached approximately 129 kilobytes per second.