tapsign
nounUK /ˈtæp.saɪn/
US /ˈtæp.saɪn/
A tapsign is a sign you tap to make something happen.
Tap the tapsign on the door and it opens.
OTHER MEANINGS
2. A small screen you touch to give instructions to a machine.
The tapsign at the museum showed a map when I touched it.
3. A mark or symbol made by tapping.
She left a tapsign on the window to show she had been there.
4. A hand signal used to get someone's attention quietly.
The coach gave a tapsign to tell the team to switch sides.