I think this is the new thing for celebrities. A retroreflective headband, or a retroflective hat. When the paparazzi pop their flashes on them taking a bat to their ex's car, or doing drugs, or walking out of court after being arraigned for doing drugs... all they camera will record is a halo of a face. great protection. you can't prove it was really that person. and anyway, it is unpublishable.