The research on police body-worn cameras (BWCs) has rapidly expanded to evaluate the technology’s impact on a range of police outcomes. Far fewer studies have addressed the various effects on downstream criminal justice actors, and those that do have focused almost entirely on prosecutors. Thus, public defenders have remained on the periphery of the police BWC discussion, despite playing an important role as an end-user of the technology.

Body-worn cameras (BWCs) have received increasing empirical attention as more police agencies rapidly deploy this new technology among officers. Recent research estimates that around half (47.4%) of all agencies and a large majority of those with 500 or more officers (79.6%) have established an operational BWC program (Hyland, 2018). BWCs can improve police operations by providing objective, recorded accounts of police-community interactions that can provide valuable evidence in investigations.

Many people know Wichita, Kansas, as the “air capital of the world,” or as the birthplace of both White Castle and Pizza Hut. Wyatt Earp also worked as a Wichita police officer long before the famed 1881 shootout at the O.K. Corral in Tombstone, Arizona. More recently, we recognize Wichita as an early adopter and innovator of police body-worn cameras (BWCs).

Police body-worn cameras (BWCs) can help improve transparency, accountability, and policing behaviors. This study extends prior BWC research by using a panel analysis design with a measure of treatment duration to examine how the effects of BWCs change over time.