During the main quest
Alone in
Chapter 1, you can start using BD-1 to view and scan targets from a distance. Shortly after encountering 2 battle droids talking with a raider grunt, you will come to a large opening. Activate BD-1 (

and

) and look to the left across the wide gap. Zoom in (

) and scan one of the battle droids or view their entry (

) to unlock the achievement.