First lessons regarding the data analysis of gunshot residue traces at activity level in TTADB

Abstract Gunshot residues (GSR) are of interest whenever a crime involves the discharge of a firearm. They do not only inform about their source, but also about the suspect’s implication. In order to assess the existing knowledge on GSR in the literature and contribute to the creation of a structured database on transfer traces at the activity level, studies focusing on transfer, persistence, background, population and detection of GSR in various scenarios and on different supports were analyzed, with a critical assessment in a Canadian context. This research establishes a review of the current knowledge identifies gaps in the literature and therefore suggests future research to be undertaken.