Here is an anecdote about the use of cryptography taken from "The Beauty in the Beasts" an article by Jody Duncan on page 95 of the magazine "Cinefex". Principal (sic) photography on Jurassic Park wrapped just after the Thanksgiving weekend. In the six months that followed, the film was editted, scored, mixed for sound and provided with finalized computer graphics dinosaurs. Already on to his next project-- Schindler's List-- Speilberg was shooting in Europe throughout most of the postproduction phase, but continued to keep his hand in Jurassic Park through an encrypted satellite feed from ILM (Industrial Lights and Magic).