Demo 01 · runs entirely in your browser

Ghostwire

Pick a file or type a message. It gets chunked, base64'd, and painted into a stream of animated data-matrix frames, one grid of pixels per chunk, like a QR code that keeps changing. A receiver panel reads the frames back and rebuilds the original bytes, checksum and all.

This is the airgap idea in miniature: get data across with light instead of a wire. A real transfer would have a camera pointed at a screen on the other side. We can't put two devices in a browser tab, so both ends live on this one page, sender on the left, receiver on the right, connected only by the pixels you can watch cross the middle.

Honest disclosure: the "channel" here is a canvas-to-canvas pixel copy standing in for a camera. Everything else, chunking, base64, the grid encoding, the checksum, the retry logic, is real and runs the same way it would over an actual camera link.

canvas data-matrix chunked base64 checksum + retry zero network

Rarity7.2

Difficulty6.6

Round-tripself-healing

ghostwire · sender / receiver, one pageidle

Sender

Chunk size 64 chars/frame

Frame hold 45 ms

simulate interference (random dropped frames, forces a retry)

frame0 / 0

grid-

payload-

base64 length-

Receiver no signal

frames received0 / 0

retries0

elapsed0.0s

throughput-