Detecting watermarks in a video can indicate the source of an unauthorized copy.

Some record stores sell unauthorized copies of artists music for as little as $4.

The publisher of a book could prosecute a maker of unauthorized copies even if they operated in a different country.

This version remains unavailable, though unauthorized copies have appeared on the internet.

The lack of authorized discs for so many years has led to numerous unauthorized copies of the movie being sold online and elsewhere.

Fourth, what effect will the unauthorized use have upon the marketability of the copyrighted work?

The names of denominations can be protected against unauthorized use by trademark registration.

The unauthorized use of investors' money was clearly illegal, the defence lawyer said.

Both have been charged with unauthorized use of a motor vehicle, police said.

More importantly, the decline in international tensions has allowed former contestants to stand down from a hair-trigger readiness, something that greatly reduces the dangers of accidental or unauthorized use.