invisibletag
nounUK /ɪnˈvɪzəbəl tæɡ/
US /ɪnˈvɪzəbəl tæɡ/
A tag that you cannot see with your eyes.
The game used an invisibletag to mark the hidden treasure.
OTHER MEANINGS
2. A digital marker that tracks something without being seen.
The app placed an invisibletag on the photo to remember where it was taken.
3. A secret sign used in a game to identify a player.
Each player wore an invisibletag so the referee knew their team.
4. A label that only machines can detect.
The scanner found the invisibletag on the package.