By Harry Pettit
Facebook has designed a way to track you and your friends using the dust and scratches on your camera lens.
The social networking giant outlines how it would connect users by matching similarities in their uploaded photos in a newly found patent.
If two people have used the same digital camera, Facebook could link them by detecting similar dust or scratch marks in their uploaded photos.
The company says it has ‘never implemented’ the technology described in the patent, but has not ruled out using it in future.