You can meet modern technologies such as 3D scanning in places where you would not expect them. For example, when investigating criminal activity. Why here?
Finding the perpetrator is just one step. Without evidence, the perpetrator cannot be convicted and the investigation will not be closed. It is therefore necessary to map the scene of the crime in detail and all the necessary evidence. No one knows which things will be key to convicting an offender in the future.
If the crime scene is digitized into 3D, it is possible to return to the original scenery, measure distances, dimensions and verify emerging theories. A lot of information cannot be found out from just photos.