focuschecker
nounUK /ˈfəʊkəsˌtʃekə/
US /ˈfoʊkəsˌtʃekər/
A focus checker is a tool that helps you see if you are paying attention.
The teacher used a focus checker to see which students were still listening.
RELATED WORDS
OTHER MEANINGS
2. A person who checks whether others are concentrating.
The focus checker walked around the room during the test.
3. A software feature that warns you when you stop focusing.
My study app has a focus checker that beeps when I pick up my phone.
4. A small device that measures how well someone is paying attention.
The focus checker on her desk lit up green when she stayed on task.