Located in the Admin room, this official tool shows which rooms currently have players in them (represented by icons), though it doesn't show their identities.
If you want to improve your situational awareness without cheating, you can use built-in game mechanics: Among us Radar Hacks (see on top right corner t...
Most radar hacks work by "sniffing" data packets the game client receives and rendering that information as a visual overlay on your screen. Located in the Admin room, this official tool