The Radar Scanner is an upgrade in SAS: Zombie Assault, SAS: Zombie Assault 2, SAS: Zombie Assault 2 Insane Asylum, and SAS: Zombie Assault 3. In SAS it is already unlocked, due to there being no Ranks in the game. In SAS 2, Insane Asylum, and SAS 3 it is unlocked at Rank 3.
The Radar Scanner displays a miniature map of the current area. In SAS, SAS 2, and Insane Asylum, it appears in the bottom-right corner of the screen, whereas in SAS 3 it is in the top-right of the screen. It shows where Zombies, Power-ups, Barricades, and the player are. In SAS 3 it will show where obstacles and other players are (in Multi-Player).
- The Radar Scanner is useful for tracking burrowers (since they cannot be seen when burrowing underground) in the mobile version of SAS 3.