Audio Watermarks Could Pinpoint Film Pirates By Seat
Slatterz points out a brief mention at PC Authority of a story at Torrent freak about using watermarking embedded in movies' soundtracks to reveal the exact location of camera-wielding bootleggers in a theater; the inventors (here's an abstract of their paper) claim it's accurate to within 44 centimeters.
Another fun fact: If parents are too strict or begin toilet training too early, Freud believed that an anal-retentive personality develops in which the individual is stringent, orderly, rigid, and obsessive.
https://www.eff.org/https-everywhere
Freud believed the obsessive compulsion for order originated in the toilet training phase. Parents who scolded their child for making a mess would, literally, cause the child to become anal-retentive.
https://www.eff.org/https-everywhere