EAS

Electronic Article Surveillance (EAS) Systems EAS systems are widely used in retail to deter and detect shoplifting by triggering an alarm if an active tag or label passes through detection antennas, typically located at exits.

  • Components:
    • EAS Tags/Labels: Attached to merchandise, these active tags or labels are deactivated by staff upon purchase.
    • EAS Antennas (Pedestals/Gates): Installed at store entrances/exits, they send and receive signals to detect active tags.
  • Technologies:
    • Radio Frequency (RF) Systems: Common and cost-effective, using radio waves (e.g., 8.2 MHz) to detect tags. They are compatible with various security tags and labels.
    • Acousto-Magnetic (AM) Systems: Use vibrating metal strips that resonate at a specific frequency (e.g., 58 kHz) when exposed to an AM signal. Known for high detection reliability and adaptability to metallic items (except iron/steel).
    • Electromagnetic (EM) Systems: Utilize amorphous metal strips that respond to low-frequency magnetic fields. Ideal for small or metallic items, libraries, and pharmacies, and can detect items in foil-lined bags.
    • RFID-based EAS: A more advanced form that combines EAS detection with item-level tracking and inventory management capabilities, improving stock visibility and providing real-time data. RFID tags contain microchips and antennas that respond with unique codes.