touchless gesture
nounUK /ˈtʌtʃləs ˈdʒɛstʃə/
US /ˈtʌtʃləs ˈdʒɛstʃər/
A touchless gesture is a hand movement you make in the air to control a device without touching it.
She changed the song with a touchless gesture in front of the screen.
OTHER MEANINGS
2. A hand signal used to communicate without physical contact.
The coach gave a touchless gesture from the sideline to call the next play.
3. A way of interacting with a screen using sensors instead of touch.
The new phone lets you scroll with a touchless gesture above the display.
4. A movement recognized by a camera or sensor to trigger an action.
The game console reads your touchless gesture to start the race.