Traditional Culture Encyclopedia - Hotel reservation - Is there monitoring behind the screen of the hotel banquet hall?

Is there monitoring behind the screen of the hotel banquet hall?

The hotel is fully covered except the toilets and guest rooms are not monitored.

Surveillance cameras have two functions, 1, which can prevent, deter and warn criminals in advance, trace clues afterwards and provide evidence for case detection. 2. Capture all the pictures in the monitoring area and transfer them to the memory.