Night Vision Goggles vs Pirates

Cormorant writes "It was reported in The Guardian that Warner Brothers has sent night vision goggles to cinemas across Britain for ushers to don and scan for camcorder pirates during the entire length of the movie [the new Harry Potter], along with watermarks and codes displayed on screen during the film. Mr Graham said "Video piracy is rife everywhere, and with the UK screening the film four days before the rest of the world, Warner was concerned the movie would end up on the internet. Warner sees the investment as negligible compared with the threat to the whole industry."