bashalarmistalt/decimen-optical-transfer
★ 6,944 stars
Covered in week 2026-W36 · the 2026-08 report
bashalarmistalt/decimen-optical-transfer — 6,944 stars · TypeScript: what it does and why developers starred it, in a 30-second video review from 31 Aug 2026.
What decimen-optical-transfer is
Send a file between two devices using nothing but a screen and a camera. One page displays the file as an endless stream of animated QR codes; another device points its camera at it and reconstructs the file. No network path between the devices, no app, no pairing, no permissions beyond the camera. The payload travels as light.
From the repository README · read it on GitHub →
Transcript
File sharing usually means network pairing or permission grants before anything moves. Decimen Optical Transfer streams files as light using fountain-coded QR animations that bypass all network requirements. The web app handles files up to 64 MB, verifies with SHA-256, works offline, and speaks twelve languages. Neither mode encrypts—any camera can read the sending screen, yet you still transfer files through open air.