Another type of reality programming features hidden cameras rolling when random passers-by encounter a staged situation. Candid Camera, which first aired on television in 1948, pioneered the format. Modern variants of this type of production include Punk'd, Trigger Happy TV, Primetime: What Would You Do?, The Jamie Kennedy Experiment and Just for Laughs: Gags. The series Scare Tactics and Room 401 are hidden-camera programs in which the goal is to frighten contestants rather than just befuddle or amuse them.
Not all hidden camera shows use strictly staged situations. For example, the syndicated show Cheaters, purports to use hidden cameras to record suspected cheating partners, although the authenticity of the show has been questioned.[26] Once the evidence has been gathered, the accuser confronts the cheating partner with the assistance of the host. In many special-living documentary programs, hidden cameras are set up all over the residence in order to capture moments missed by the regular camera crew, or intimate bedroom footage.