This screen transmits
Send a file or text
Any file up to 64 MB, or a pasted text snippet up to 4 MB. Compressed when it helps, restored with its original name.
Transfer files
with light.
Send a file or a block of text from one screen to another device's camera. No account, pairing, cloud storage, or network path between devices. AES-256-GCM encryption happens before the first QR frame.
This camera receives
Point and receive
Point your camera at the sender's screen to receive the file.
A network path is not required between the devices. The encrypted bytes travel as light. A recorded QR stream does not contain the plaintext file, but the JSON master key and the separate six-digit transfer code must still be protected.