timer

All of those are now working on a timer system and the buttons which launched the fake messages have been deactivated, he said.

Roo shares videos of what she calls "one hour speed cleans", where she sets herself a 60-minute timer and attempts to get as much cleaning done as possible.

She set a timer for certain math problems — so all students knew they were being challenged to pay attention and move quickly.

He also recalled an incident where the "beep" of a timer was used to signal that one attack was to stop and another to start.

Or using a timer with limits on how long each person’s shower should be.