At the exits of the premises SAFE-TECH Security’s EAS detection system sounds an alarm or otherwise alerts the staff when it senses active tags. For high-value goods that are to be manipulated by the patrons, wired alarm clips may also be used; these, being less common and technologically less mysterious, are not covered by this article.
There are four major types of electronic article surveillance systems:
• Magnetic, also known as magneto-harmonic
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Acousto-magnetic, also known as magnetostrictive
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Radio frequency
• Microwave
• RFID