dotcode
nounUK /ˈdɒt.kəʊd/
US /ˈdɑːt.koʊd/
A dotcode is a pattern of little dots that a machine can read.
The robot scanned the dotcode on the box to learn what was inside.
OTHER MEANINGS
2. A secret message written in dots instead of letters.
The spy hid a dotcode in the corner of the page.
3. A code made of dots and dashes used for sending signals.
The old telegraph used a dotcode to send messages.
4. A small printed mark of dots that stores a web address.
You can scan the dotcode on the poster to visit the website.