This document discusses the history of technology used in policing from the 19th century to present day. It describes how early inventions like the telephone, two-way radio, and automobile revolutionized policing by allowing improved communication and mobility for officers. The professional policing era from the early 1900s established many modern policing practices. While innovations initially helped address crime, rising populations created new challenges. Recent decades saw a shift to community-oriented policing and new technologies that further aid law enforcement, making officers more efficient and data-driven.