Kinoautomat

[1] As the audience cast their vote, the result of each choice was displayed on the perimeter of the screen, with a numbered panel corresponding to each seat turning red or green according to the button pressed.

The project was well received, with The New Yorker writing: "The Kinoautomat in the Czechoslovak Pavilion is a guaranteed hit of the World Exposition, and the Czechs should build a monument to the man who conceived the idea, Radúz Činčera.

"[5] Initially, Hollywood studios were keen to license the technology, but under the Communist government the Kinoautomat concept was the property of the state, and never made the transition.

Decades after the original screening, the film was broadcast on Czech television, with the two reels split across channels ČT1 and ČT2, revealing the secret of limited interactivity.

At one point, Williams' main characters watch and discuss the Kinoautomat, claiming that the limited interactivity was intended as political commentary on the rigged elections under communist rule.