Read the accuracy radius
A displayed accuracy of ±8 m means the browser estimates the device is within roughly that radius; it does not mean the reading is exact to eight metres. Satellite visibility, Wi-Fi signals, device hardware and browser permissions all affect the result.
±5–15 moften usable outdoors with open sky
±20–100 mtreat as general area context
No readinguse a clear site label instead
Improve the location record
- Open the camera outdoors or near an unobstructed window.
- Wait for the GPS indicator to move from searching to ready.
- Check the accuracy value before capturing a critical frame.
- Add a human-readable site or unit label.
- Include a context image with recognizable fixed features.
Altitude needs extra caution
Many phones omit altitude, and readings may be much less stable than latitude and longitude. Use it as supplemental context, not as a surveyed elevation. Stamp Camera hides altitude when the browser does not provide it.