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.
This camera receives
Point and recover
Detects on its own whether a file or text is arriving, and verifies it with SHA-256 before handing it over.
A network path is not required between the devices. The bytes travel as light. Files are not encrypted, so anything on the sending screen is readable by any camera pointed at it.