Google keeping unblurred images for a year
When Google was challenged by the Swiss authorities to blur their images better they agreed pretty fast. This was all because Google knows they shouldn't get into to much trouble with European legislation at the moment because other things are more important.
In a post about European Street View issues the Google Europe policy team addressed this issue saying they keep the urn-blurred images in their database so they can "build better products, for example by constantly improving our blurring technology so that it obscures more of the things it should and less of the things it shouldn't."
"We think one year strikes a reasonable balance between protecting people's privacy and our ability to reduce mistakes in blurring, as well as use the data we have collected to build better maps products. It's important to remember that European privacy laws allow for the retention of data, so long as it is for reasonable periods of time and the information itself is actually being used. "
If you do however make a special removal request, even if the image is blurred already, Google will delete these images as soon as possible.
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