Crime & Forensics LUYOR helps you see what your eyes can’t see at a crime scene. At a crime scene, fast and accurate detection of possible traces is of vital importance. Many biological fluids are fluorescent in nature. When such traces are illuminated with light of the right wavelength they fluoresce and are detectable to the investigator. The degree to which various substances become visible when using different filters depends on the state of the substance and the surface on which the substance exists. Deciding what light source to use to achieve the best result in finding traces at the crime scene is an art. It takes years of experience to learn what light to use depending on the occasion - it’s not an exact science. New users using ALS (Alternative Light Sources) can of course use combinations of light and goggles to determine the best option for that occasion using trial and error until confidence and knowledge has been built up. We make it possible for each user to put together their own unique ALS kit. No crime scene looks the same. No crime scene investigator uses the same method, but we can all share experiences and learn from each other. LUYOR does offer professional training in using light at a crime scene. All their trainings are held by Crime Scene Investigators.