Using the Scout Launcher

The Scout Launcher is a cannon that shoots a small robotic "scout" up to a few dozen feet away. The scout will cling to whatever surface you aim it at, and is small enough to be sent through grates (as shown below). Only one scout can be deployed at a time. It must be recalled (by holding RB or L2) before it can be used again. The purpose of the scout launcher is several-fold:

Detecting Ghost Matter
Ghost matter is an invisible gas that will burn you and can kill you. While your suit will warn you of ghost matter when it is nearby, it will not tell you exactly where. Launching a scout at a suspected location (usually above a plane of small crystals. If the scout lands in the middle of a cloud of ghost matter, a red sign will appear, warning you to avoid that area.

Accessing Areas You Can't
Scouts can be sent through grates or into areas that are partially blocked. Your ship's log will sometimes update simply for sending scouts into inaccessible areas. You can also safely explore areas that could be potentially dangerous (like the Dark Bramble).

Stopping quantum objects from teleporting
Quantum things usually change position once you look away from them right? If you take a picture of it then you are still looking looking at it according to this game. So if you take a picture and keep the launcher open, the thing will not teleport

These are all on the ship when you take off your suit and analyse whats behind it