Mo. Rev. Stat. § 542.525

No employee of a state agency or a political subdivision of the state shall place any surveillance camera or game camera on private property without first obtaining consent from the landowner or the landowner's * designee; a search warrant as required by and under Article I, Section 15 of the Constitution of Missouri or the Fourth and Fourteenth Amendments of the Constitution of the United States; or permission from the highest ranking law enforcement chief or officer of the agency or political subdivision, provided that permission of the highest ranking law enforcement chief or officer of the agency or political subdivision is valid only when the camera is facing a location that is open to public access or use and the camera is located within one hundred feet of the intended surveillance location.