I’ve certainly fought back the urge to shout obscenities at the register over the years, but until now I never thought it might be because the laser in the scanner was triggering an inherited tic disorder; I just thought I was angry about something. A woman in Pennsylvania thinks otherwise and sued a convenience store, claiming that when a clerk shone a price scanner’s LED in her daughter’s face and told her to cheer up, the light burned her daughter and triggered Tourette’s-style symptoms. The judge threw out the case earlier this month for lack of evidence. [More]