- "Single use CTOS Scan to detect and tag non-player enemies."
- ―In-game description.
CTOS Scan is a craftable item in Watch Dogs.
It appears as a man emitting circular signals in the weapon wheel. Once activated, a signal will be emitted by Aiden (it can be seen in the minimap) and any enemy NPC caught by the signal will be visible in the minimap.
It is useful for gang hideouts, as it allows a quick accounting of the enemy forces.