flashcode
nounUK /ˈflæʃ.kəʊd/
US /ˈflæʃ.koʊd/
A flashcode is a quick pattern of light that carries a secret message.
The robot blinked a flashcode to tell the other robots where to go.
RELATED WORDS
OTHER MEANINGS
2. A barcode that can be read very quickly by a scanner.
The cashier scanned the flashcode on the box in a second.
3. A short code sent by a flashing light on a device, such as a phone or camera.
The camera's flashcode showed that it was ready to take a picture.
4. A fast, coded burst of data sent between computers.
The app sent a flashcode to the server to log in.