New Trace Evidence Collection App Now Available

Source: Daniel E. Mabel, MS

Please check out the newly updated version of the Trace Evidence Collection App, which is available for free download on both Android and iOS platforms! The Trace Evidence Collection App is intended for use by crime scene investigators to have access to a quick and easy reference for the detection, recognition, collection, and packaging of commonly encountered types of trace evidence at various types of crime scenes. The newest version of the application (released August 2023) contains 19 demonstration videos covering topics from making a druggist fold to collecting primer Gunshot Residue (GSR) from hands to packaging questioned glass, and everywhere in between.

This project was a collaboration between the National Institute of Standards and Technology Organization of Scientific Area Committees for Forensic Science (NIST OSAC), the National Institute of Justice Forensic Technology Center of Excellence (NIJ FTCoE), and independent non-profit research institute RTI International. The app contains information on Types of Crime Scenes (e.g., Arson, Hit & Run) and Types of Trace Evidence (e.g., Fire Debris, Glass). Each Type of Crime Scene section contains an overview, a list of relevant evidence types, and checklists for evidence collection from scene-specific sources (e.g., from victim, from scene/vehicle). Each Type of Trace Evidence section contains an overview, information about detection, recognition, collection, and packaging, as well as demonstration videos. If you have any questions or comments, please contact Daniel Mabel (he/him/his), OSAC Trace Materials Subcommittee Outreach Task Group Chair, at


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