Activation of Body-Worn Cameras Without Responder Manipulation: Operational Field Assessment Report [open pdf - 2MB]
From the Executive Summary: "Most commercial off-the-shelf (COTS) body-worn cameras currently in use by law enforcement personnel must either be manually activated when needed or they are set to continuously record while worn. In the former case, responders may fail to activate their cameras in rapidly developing emergency situations, while in the latter case, large amounts of irrelevant video and audio data are obtained that may nevertheless need to be digitally archived. Hitron Technologies Inc. (Hitron) developed the body-worn camera prototypes that were assessed during this operational field assessment (OFA) to address these limitations for U.S. Department of Homeland Security (DHS) Science and Technology Directorate's (S&T) First Responder Technologies Division (R-Tech). The prototypes were designed to automatically activate based on trigger signals transmitted wirelessly from any of four critical event sensors: a holster sensor that detects the unlatching of a holster weapon retaining strap, an occupancy sensor that detects responders exiting their vehicles, an audio sensor that detects elevated sound levels and a hemodynamic sensor that detects an increase in the wearer's pulse rate."
U.S. Department of Homeland Security: https://www.dhs.gov/