After reading that the Hateful Eight script was leaked after Tarantino gave it to only three actors, I wondered why scripts aren't customized to help track their distribution. It would be fairly easy to change a few lines of dialog, or the name of a secondary character, to make each copy unique. If a given version later shows up publicly, you wouldn't know exactly who released the script (since it still could have been stolen from a careless recipient), but you would know the start of the path that led to the leak.

Is script seeding already being done?