Posts made in July, 2014

Access Control Systems Deter Intruders

The best defense against unauthorized entry or outright intrusions are good access control systems.  Simply defined access control is really defining who may enter where, and when he may enter.  Generally speaking entry to areas within protected premises should be limited only to those who need access.  Further limits may be set to identify only specific times when certain people may enter restricted areas.  There is normally no reason for a dayshift worker to require access to his workplace after working hours; shift changes and work required after normal working hours can be handled separately. The most basic elements of access control are physical barriers and access control points.  Physical barriers may be walls enclosing a compound or the walls of a building.  The physical barriers contribute a lot to the effectiveness of the whole access control system.  It would make no sense, for example, to have state of the art access control systems installed in a place with flimsy compound or building walls.  The system is just as strong as its weakest link. Access control points may be gates, doors, turnstiles or other points of entry where access or flow may be restricted.  In the olden times simple access control involved mechanical keys; whoever had keys may enter, and those that don’t have to ask someone with a key for access.  Keys to the most restricted spaces were only given to those who need them and very senior managers.  It was relatively effective unless the key is lost or copied. Nowadays, most access control points are protected by electronic locks fitted with readers or keypads.  Access is granted through pin codes, passwords, swipe cards, proximity cards, or biometric readers.  In advanced systems the identities of persons granted access are integrated to the pins, passwords, cards or their biometric data.  This allows tracking and recording of the identities of persons who enters each space along with times and dates of access (who entered where, when).  Security companies affiliated with the Canadian Security Association often stock many types of access control devices to choose from. There are also options to break down industrial complexes into zones and zones into particular rooms and spaces.  Each level of access control makes it just that little bit harder for unauthorized persons to gain access to areas where they should not be.  In many applications light barriers such as turnstiles are used in conjunction...

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