they still are
If someone has the same shoes, size etc. Especially relevant when you have a suspect in custody; it will help to piece together the information.
for crime scenes
Scenes of the Crime was created in 2001.
The duration of Scenes of the Crime is 1.52 hours.
Anything traceable: blood, semen, fingerprints, footprints, tire tracks ,hair, skin, fibers(clothing), bullet casings, a weapon, cell phone, vehicle.
Insects are used for representing god's creatures. But whats good about them in crime scenes is that some they can use their sting to squirt this poison at the crime causers which can make them die.
The police followed the muddy footprints back to the scene of the crime.
Crime Scenes Uncovered - 2003 was released on: USA: 2003
Police search for various types of evidence at crime scenes, including but not limited to: DNA, fingerprints, footprints, weapons, tools, bloodstains, fibers, and other trace evidence. They also look for any signs of forced entry or tampering with evidence that can help establish how the crime was committed. The goal is to collect and preserve evidence that can be used to identify the perpetrator(s) and support investigations and prosecutions.
None, except for the added difficulty in preserving and processing it.
One example is that of DNA technology used in investigating crime scenes.
Investigate Crime Scenes