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To help put this new technology into perspective, Tagtec is not traditional:
- Passive infrared (must be deactivated when a space is legitimately occupied)
- Magnetic/contact (intrusive and difficult to install)
- Out-of-range/exit portal tags (movement ‘within’ range is not detected and tags can simply be shielded to prevent an alarm)
- Vibration sensing tags (tags are large, expensive and prone to false alarms)
- Coordinate location (these systems only detect a change in position when a tagged item has moved a few metres - they are inflexible and require a significant infrastructure of fixed multiple sensors)
The Tagtec technology uniquely identifies small movements, in any direction. Active RFID tags, half the size of a thick credit card are attached to monitored valuables by conventional means e.g. adhesive or Velcro.
After the tags are attached the controller automatically activates the system by “pairing up” the tags. One of a pair is automatically designated the detector. Each pair then forms part of a dynamic virtual network where the detector tags regularly communicate their paired status with the controller at high frequency.
Regular low frequency tag to detector tag communication is at short range and therefore very economical, (in other systems all the tags talk to distant sensors and use more power resulting in lower battery life).
The principle of the network design is based on positive response. Any attempt to interfere with the communications within the network will instigate an alarm condition. The result is a system that is dynamic, robust and tamperproof.
When the location and/or number of valuables tagged in the network is changed legitimately, it only requires the controller to be disarmed and reactivated for the network to be automatically re-established. This process takes a few seconds.
This proprietary system is very flexible and can be customised for a wide range of applications. In some ways communication is similar to short range technologies such as Bluetooth and Zigbee. However, it requires less power, much lower processing and offers inherently higher security, longer battery life and a fundamentally lower cost solution.
