User Operation Prohibition

What Does User Operation Prohibition Mean?

User operation prohibition (UOP) is a feature that prohibits the user from performing certain functions during certain parts of a DVD or Blu-ray disc. Most commonly, this is used to prevent one from skipping legal disclaimers or advertisements. The DVD/Blu-ray player displays an error message or symbol when a prohibited action is attempted.


Techopedia Explains User Operation Prohibition

User operation prohibition finds its utility in FBI warnings against piracy or copyright control and unskippable commercials. Many DVD players override the UOP command and play the movie immediately if stop-stop-play is pressed. In most cases, removing UOP does not guarantee free navigation throughout the restricted part, because sometimes the sections covered by UOP do not have the controls for skipping to the main menu or other parts of DVD built in. This has become more common in more recent DVDs and DVD players in order to maintain the UOP command and control.


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Margaret Rouse

Margaret Rouse is an award-winning technical writer and teacher known for her ability to explain complex technical subjects to a non-technical, business audience. Over the past twenty years her explanations have appeared on TechTarget websites and she's been cited as an authority in articles by the New York Times, Time Magazine, USA Today, ZDNet, PC Magazine and Discovery Magazine.Margaret's idea of a fun day is helping IT and business professionals learn to speak each other’s highly specialized languages. If you have a suggestion for a new definition or how to improve a technical explanation, please email Margaret or contact her…