Security theater consists of security countermeasures intended to provide the feeling of improved security while doing little or nothing to actually improve security. The term was coined by Bruce Schneier for his book Beyond Fear, but has gained currency in security circles, particularly for describing airport security measures. It is also used by some experts such as Edward Felten to describe the airport security repercussions due to the September 11 attacks. Security theater gains importance both by satisfying and exploiting the gap between perceived risk and actual risk.
Security theater has been defined as ostensible security measures which have little real influence on security whilst being publicly visible and designed to demonstrate to the lesser-informed that countermeasures have been considered. Security theater has been related to and has some similarities with superstition.
Thanks Gizmodo for the pic and the facts