Physical security describes measures that prevent or deter someone from accessing a location or information. It can be as simple as a closed door or as complicated as a military installation.
In the security field there are three primary elements to physical security; obstacles, alarms and the security response.
Obstacles
Obstacles are intended to slow threats, but will not be sufficient to stop a serious threat. They are stand alone and usually unattended items such as locked doors, razor wire barriers and shatterproof windows.
Slightly more complex obstacles can include:
Access cards and combination looks on doors
Doors that must be pulled to enter or exit an area
Revolving doors or turnstiles which allow one person at a time to advance
Vehicle barriers controlled by access cards
Having a double set of locked doors is very effective. The first that opens into an enclosed area and the second that can not open until the first is closed. This is a very good obstacle for at least two reasons. Any person entering a double door area knows that exiting by the doors will be very difficult. The second of the double doors is
These double door areas are often equipped with video surveillance and alarms.
Alarms
Alarms are to both alert security response teams and to unbalance an attacker. Loud alarms, strobe lights or bright lights are common alarms.
juventus 2011 camiseta
More complex and interactive alarms include:
Closed-circuit television cameras with motion detectors
juventus 2011 camiseta Roving security patrols
Guard dogs
Birds
Although it may sound unusual, peacock and geese are used in security because their distinctive cries can act as a warning when people approach but to the common person they appear harmless, even attractive.
没有评论:
发表评论