The November 26, 1977 Tucson Citizen (Tucson, AZ) imagined the border and facility surveillance technology of 1990.
Special sensors designed to look like rocks, plants and other natural objects could be seeded along borders, and transmit via satellite the sounds of voices, footsteps and vehicles of potential illegal aliens and smugglers.
See also:
The Road Ahead: Future of Police Work (1995)
Closer Than We Think! (1958-1963)
Jet Flying Belt is Devised to Carry Man for Miles (New York Times, 1968)
Headlines of the Near Future (1972)
