This document discusses electronic monitoring (EM) of offenders. It provides an overview of 3M's global experience with EM, describing the typical types of EM equipment and how it is used. The document then focuses on the current and potential future state of EM in the UK, including pilots of GPS monitoring and its use for temporary work release of prisoners. It notes that EM caseloads in the UK could double in five years with reforms and new uses. However, it questions whether sufficient resources and support systems would be in place to effectively assess and manage offenders in the community under expanded EM programs.