Subconscious cinema - film endings changed by your mood
8 May 2013 Last updated at 08:39 BST
Researchers are developing technology that can change the outcome of films based on the subconscious desires of the audience.
Could it spell the end for the familiar sense of disappointment at movie endings?
Click's LJ Rich tried out the system, which measures heart rate, brain waves, muscle tension and even perspiration before deciding which scene should play next.