The footprint is one of the important evidence to identify the criminal suspect,and the footprint examination is an important means to identify the criminal suspect through the traces left at the scene,footprint verification has also become an important way to extract physical evidence and provide indirect evidence for criminal trials.The criminal suspects often leave a plane footprint with dust as the medium at the crime scene,combining with the previous site investigation experience and the optimization and innovation of the traditional method of appearance,in this study,the footprints of dust wearing shoes and socks on different planes were compared and studied,different colored powders are used to enhance the color contrast for the background color of the footprint to explore which dust plane footprint is suitable for the powder method.
万方数据
维普
