- William S. Burroughs' novel "Naked Lunch" contains a chapter concerning "Senders," a hostile organization of telepaths bent on world domination, a clear literary inspiration for this film.
- The crash scene in the record store prominently features a float hanging from the ceiling for the RSO (Robert Stigwood Organization) record label, who paid for this placement. By the time the film was released, RSO had gone out of business.
- The exploding head scene was accomplished by filling a latex head with dog food and rabbit livers, and shooting it from behind with a 12-gauge shotgun.
- A very early treatment from 1976, entitled "Telepathy 2000" takes place in the future, begins with the protagonist (who is named Harley Quinn) telepathically raping a woman in a subway, and was set as a spy movie. In this version, a company called Cytodyne Amalgamate was breeding evil Scanners to take over the world and the U.S. Government was employing good Scanners to stop them.
- The Jennifer O'Neill character, Kim Obrist, is named after the assistant to the producer (Kim Obrist).
>>> WARNING: Here Be Spoilers <<<
Trivia items below here contain information that may give away important plot points. You may not want to read any further if you've not already seen this title.
- SPOILER: Production stills exist of shots in the final duel between Cameron and Revok, where the top of Cameron's head explodes, sending sparks into the air. Apparently this climax was filmed but David Cronenberg chose to omit it from the final print.
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