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When i view my current location on Google maps on my android it shows me a circle of uncertainty. If i take a geotagged picture it will off course contain information about its Lat or Lon. Does it also contain information concerning accuracy of this geotagging ?

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According to the Exif standards, yes there are attributes relating to GPS accuracy such as GPSDOP (Dilution of precision). See this table for a list of these tags.

You could also use a tool like ExifTool to extract and view the Exif data yourself.

However, not all devices actually use GPS but use other forms of geolocation such as cellular multilateration, and others record only the bare minimum (coordinate tags), so these tags are likely to be empty more often than not.

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