AFTE Store - Examination of the Probe-Knot Junction to Estimate Duration of Electronic Control Device (TASER) Exposures

Beginning in 1999, Electronic Control Devices (ECD) or TASERs have become standard less-lethal devices for many law enforcement agencies across the US. Their intended purpose is to deliver an incapacitating shock to a subject through two wire tethered probes. When post use analysis is required of the forensic scientist, standard tools of the trade can be employed to assist in the investigation. Microscopic physical characteristics of the probe/knot junction can determine if the TASER application was successful in transferring electrical energy to the subject. While comparing fifty samples using both stereomicroscopy and Scanning Electron Microscope (SEM), we were able to determine if a patent circuit was completed during the deployment. In some instances application duration could be determined.