Footwear impression evidence Crime scene impression Q2 compared with suspects shoe K1. Comparison of crime scene impression (left), test impression (center) and the suspects shoes (right). A number of randomly acquired characteristics that are visible at the crime scene print can also be found in the test impression and the suspects right shoe. This correspondence in randomly acquired characteristic indicates that the suspects right shoe created impression found at the crime scene and thus show that the suspect was present at the crime scene.