Potter Privacy 'Police' Point to Photo 'Prints'
by Peter Bradwell
Interestingly, they are relying on the owner either having registered the camera, or having had it serviced. They are apparently the only ways that the serial number - revealed through the photo metadata - is matched to an individual. So, privacy fundamentalists - don't register or fix your cameras!
If you print it or photocopy the book illegally, you're not off the hook - there might be similar tactics available.