Behind the scenes
The 1982 presskit for Blade Runner describes the Esper:
- "A high-density computer with a very powerful three-dimensional resolution capacity and a cryogenic cooling system. The police cars and Deckard's apartment contain small models which can be channeled into the large one at police headquarters. This big apparatus is a well-worn, retro-fitted part of the furniture. Among many functions, the Esper can analyze and enlarge photos, enabling investigators to search a room without being there." Bryant briefs Deckard with the help of an esper and Deckard examines Leon's photos with one as well."