motion sensors
There are many more private
security officers than public police officers, making tandem projects and collaboration essential "Private Security and Public Law Enforcement," n. d. There may be some overlap between public law enforcement and private security, but generally the latter can be more highly specialized and are therefore useful in situations such as campus security. Large privately owned facilities like the campus stadium require a dedicated staff of personnel, rather than a sporadic or incident
response team. Therefore, security at the stadium during games can be best provided by the private sector.