Audience Acupuncture is a variation on the Spiker illusion designed by noted illusion designer Jim Steinmeyer. It has a number of advantages over conventional Spiker-type illusions, and these have made it a popular choice with magicians. One advantage of this illusion over older Spiker-type illusions is that the assistant's head and feet remain in full view of the audience at all times. However, its biggest advantage is that it can be performed on untrained audience members without any prior preparation. It is this ability to be performed on audience members that has given the illusion its name.