What is a tag-based proximity warning system?

18TH MARCH 2025

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3 MINUTE READ

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SensorZone

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A tag-based proximity warning system requires all personnel to wear a tag (or similar wearable device) whenever they are working on site.

Tags are uniquely identifiable, don’t need recharging and are treated as part of a worker’s standard PPE.

Tag-based detection works by installing an antenna onto a vehicle, which creates a detection bubble around it. In the case of SensorZone, these bubbles are configurable between 3m and 10m. For larger vehicles, multiple antennas can be added to create a bigger detection area.

Once a tag-wearing worker enters a detection bubble, the alert mechanisms activate. These are:  

  • The worker’s tag vibrates  
  • The vehicle operator gets a visual alert on the in-cab display
  • An alarm sounds to alert all nearby parties to the potential danger

All of this incursion data is sent to a cloud-based Insights Platform, which allows people to measure, review and identify risks on-site.

If you’re interested in other available types of proximity warning, you can explore how camera-based systems work by reading the blogs below: