Screen → camera

Send a message or a file as a sequence of frames, read it back with a camera. Detection uses the active model; decoding is the shared demodulator + Reed–Solomon, and the result is verified byte-for-byte.

Send

idle

Message …or a file (overrides the message)

modulation ecc

resolution fps repeat

finder pattern (optional) placed at

The finder gives the detector an unambiguous anchor at any distance. Its cells are reserved — the payload is laid out around them, never over them — so it costs capacity and can never corrupt data.

Start transfer ▶ play ⛶

no transfer

–

Receive

idle

Transfer no transfers yet

Start receiving 📷 file reset

0 / 0 frames –