What physical security measure is necessary to control access to company information?

A.
Air-conditioning

B.
Username and password

C.
The use of break-resistant glass and doors with the right locks, frames and hinges

D.
Prohibiting the use of USB sticks

Explanation:
Physical security uses various types of sensors. The most common are:
– Passive infrared detection – these sensors are usually used indoors and detect temperature changes within a certain distance from the sensor;
– Cameras – these sensors record images which can be viewed at a later time. Certain smart software allows automatic checks to be carried out;
– Vibration detection – these sensors detect vibrations;
– Glass break sensors – these sensors detect when a window has been broken;
– Magnetic contacts – these sensors detect when a door or window is opened.