Is My Halo Fence Moving? Understanding GPS Drift

The Halo Collar uses GPS to enforce virtual fences, meaning your dog’s location and fence boundaries rely on satellite signals.

While your virtual fence does not move unless you edit it, you may notice feedback triggering in slightly different spots. This is due to normal GPS drift.

What Is GPS Drift?

GPS drift refers to small variations in your dog’s reported location caused by natural fluctuations in satellite data.

This can make it seem like the fence has “moved,” especially if you test the collar in the same area over time and notice feedback occurring slightly earlier or later.

What Level of Drift Is Normal?

• 7–10 feet: Normal and expected
• More than 10 feet: May indicate temporary GPS inaccuracy or poor signal conditions

What Causes GPS Drift?

Several factors can impact GPS accuracy:

• Dense tree cover or tall buildings
• Cloudy or stormy weather
• Limited satellite visibility
• Improper collar placement or fit

Proper collar fit is important to ensure the GPS antenna has a clear connection to satellites.

Solutions for Significant GPS Drift

If you’re experiencing more drift than expected, try the following:

• Check collar placement: Ensure it is snug and properly positioned
  • For more information, check out this article. 
• Adjust your fence: Modify boundaries slightly in the app if needed
  • Here is some additional information about how to Edit Your Halo Fence.
• Use proper hand-testing technique: Gently shake the collar to activate the motion sensor
  • Here is some additional information on how to properly Hand-Test your collar. 
• Update software: Keep your app and collar firmware up to date

Need Help?

If you continue to experience issues, please refer to the “How to Contact Customer Support” article to get in touch—we’re happy to help!