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Quite a few people mention the pictures were taken with a camera and uploaded at a later date, so GPS wouldn't have been a factor. With the amount of data Facebook has I wouldn't be surprised that they could do more than just use GPS information to place locations.

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I'm sure there are other technologies which can be used for geolocalization and can achieve similar "performances" (I'm thinking about WIFI networks or IP, in some cases).

Still, I wouldn't expect a digital camera to put those informations in the EXIF (assuming it does have a WIFI and/or an IP address)

Also, to me Facebook doesn't seem to be using any magical machine learning algorithm capable to recognize the location of a PIC from a face, it never did on my PICs, not even when there were landscapes in it.

The guy could instead have uploaded the photo using a smartphone which added the GPS coordinates.

But what do YOU think instead? How does that work? Is it working also for your uploads?

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