The movie industry uses something like 'fingerprinting for DRM', adding dots to film prints sent to movie theaters to figure out where bootleg telecining is bei

The movie industry uses something like 'fingerprinting for DRM', adding dots to film prints sent to movie theaters to figure out where bootleg telecining is being done: https://en.wikipedia.org/wiki/Coded_anti-piracy https://en.wikipedia.org/wiki/Coded_anti-piracy