

This can be extremely troublesome if you move to another region permanently or at least for a longer period of time, as you may not be able to play media bought in the new region on a player that you bought in your previous region (or play media bought in the old country using a new player). A movie DVD purchased on the last trip the US for instance might not play on an European DVD player. The second is a regional encoding which can cause all kinds of troubles for users as it can prevent the playback of a movie or video. The first is a copy protection that has been added to the disc to prevent that its contents are copied (or backed up). Users often face two different protections on discs, not just one. This often prevents creating a copy of a movie even if it has been purchased legally, but may also limit playback at times. Many video DVDs and Blu-Ray discs use protection to prevent the reproduction of media files found on those discs.
