Metal detectors and X-ray machines - security products for screening

Two security products have come to dominate the practice of screening people and possessions for possible risks or contraband

. The X-ray scanning system and the metal detector are two technologies used throughout the security sector to screen entry to airports, prisons, banks and other VIP areas - and the chances are they are the only system that most people will have any familiarity with.

The major benefit to these systems is one common to most technological solutions - they remove much of the scope for human error in security screening. In most of their applications, such as airport security, they also mean that large numbers of people can be processed effectively without compromising security protocols.

In fact, these systems beat physical searches in terms of both convenience and capabilities. This isn't just because most physical searches are largely perfunctory and can also be massively disruptive, depending on the circumstance (imagine if everyone had to unpack and repack their luggage at the airport) but also because a physical search has to exhaust every possible hiding place one by one.

With an X-ray machine, you can see both within bags and luggage as well as within the objects contained inside - and without ripping them to pieces. Items that appear perfectly normal in their outside appearance can often contain contraband or even explosive devices and when passed through an X-ray machine, these objects can quickly be identified by trained staff.

Similarly, a metal detector can easily control access to a secure zone on an individual basis. Guns, knives, conventional explosives and other metal-rich devices are all impossible to sneak past a metal detector, no matter how well hidden they are. Even if someone was to surgically implant such a device - which is needless to say, an extremely far fetched scenario - they wouldn't be able to pass through a metal detector without setting off the alarm and drawing the attention of security personnel.

These systems are so effective at security screening that the reality is that most of the time, they'll never actually detect a dangerous device (though X-ray machines at airports may often catch alcohol, tobacco or other goods before customs). This is because the only way to get around them is generally to avoid them completely, so they essentially act as a supreme deterrent and a near sure-fire way of catching those too foolhardy to be deterred.

Metal detectors and X-ray machines - security products for screening

By: Andrew Marshal

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