As the voice of the computer, Bud Cort had to deliver his entire performance from inside a box on the set; his co-stars were never allowed to see him during filming. The director was afraid that if the other performers associated a person to the voice, they would react to it as if they were talking to a human being instead of a computer and the difference in reaction would show on camera.
Virginia Madsen revealed in a 2011 interview with Kevin Pollak that she had bought the remake rights to this film, but couldn't get any studio interested in making it.
Phil Oakey of The Human League admitted in an interview that he put a joke in the song "Together in Electric Dreams" that no one ever got. The line "Although you're miles and miles away" was a wordplay on the lead character's name.
(At 56:00) In the dream musical sequence, Edgar the computer dreams of electric sheep jumping a fence, while Miles dozes off to sleep. The reference is to author Philip K. Dick's (1968) science fiction novel "Do Androids Dream of Electric Sheep?" Dick's stories typically focus on the fragile nature of what is real and the construction of personal identity. This is borne out by Miles', "I'm not what I seem to be."
The modules that Miles uses to control his appliances and other various items in his house are very similar to X-10 automation, which did exist during the period and is still around in the present time.