How to Set a Safe Zone Radius
That Actually Works

GPS accuracy varies indoors

Inside a building, especially a large campus, mall, or apartment complex, GPS can be off by 20-50 meters — a radius that's too tight simply never triggers.

Dense urban areas pack buildings close together

In crowded parts of Indian cities, a generous radius on a small plot can accidentally overlap a neighboring building, causing early or false alerts.

Campuses and large complexes need bigger zones

A college, office park, or hospital compound is often much larger than a single home — the zone needs to cover the whole property, not just one entrance.

Home (standalone house or small apartment)

100-150 meters is usually enough — covers the building and immediate surroundings without reaching the neighbor's gate.

Apartment complex or gated community

150-200 meters, centered on the complex, so the alert fires at the main gate rather than only right outside your specific block.

School, college, or office campus

250-400 meters or more for a large campus — center the zone on the middle of the property, not the main gate, so it covers the whole area.

Mall, hospital, or large commercial building

150-250 meters — big enough to account for underground parking and GPS drift indoors, small enough to still be meaningfully specific.