Issues concerning forensic inference exist in all areas of Forensic Science, and Cell Site Analysis is no exception. There is a standard concerning opinion evidence adopted by both the European Network of Forensic Science Institutes (ENFSI) and the Association of Forensic Science Providers (AFSP) based on the principles of the Case Assessment and Interpretation (CAI) Model widely used within “traditional” forensic Science. This standard has not been widely adopted, or does not appear to be particularly well known, either within Cell Site Analysis or in the general field of Digital Forensics. This paper is aimed at Cell Site Analysis experts and outlines the legislative and regulatory framework within which opinion in Cell Site Analysis is provided and addresses how the principles defined in the AFSP standard can be applied to Cell Site Analysis. A case example highlighting differences between a task-driven approach commonly used within Cell Site Analysis and a CAI approach to the same data is presented and explored.
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