Editing Concealment device (section)

{{Short description|Device used to hide something}}
[[File:Radio hidden in a book.jpg|thumb|Radio hidden in a book. This was commonly done in World War II by underground [[Resistance during World War II|resistance cells]] to hide radios from the German occupiers.]]
'''Concealment devices''' or '''diversion safes''' are used to hide things for the purpose of [[secrecy]] or [[security]].  They are made from an ordinary household object such as a book, a soda can, a candle, a can, or something as small as a coin. The idea is that such an inconspicuous object would not be expected to contain anything of worth.<ref>101 Secret Hiding Places by George Shepherd, CDI Publications Inc., ASIN: B00RPMS96S</ref>

Examples in [[espionage]] include [[dead drop]] spikes for transferring items to other people, and hollowed-out coins or hollowed out teeth for concealing something - such as microfilm or a [[suicide]] pill. Examples in [[smuggling]] include [[suitcase]]s with [[false bottom]]s for hiding [[contraband]].

During [[World War II]] [[MI9]] was responsible for creating many concealment devices for "escape aids" to assist [[prisoner of war|prisoners of war]] to escape.