Law enforcement is beefing up its security inside its police stations lately with the addition of security cameras inside its interview rooms, holding cells, evidence rooms and hallways. A security camera has many uses inside a police station. For example having a security camera watching the evidence room is a given due to the fact that a police station can have everything from money to drugs hidden inside its evidence room and what good is your evidence if it has been stolen.
Also another favorable place is the interview room for a security camera and also audio equipment is often being used in an interview room. The reason is simple, if you get a suspect to confess to a crime you now have video and audio proof to back up his claim in court.