Stop Copy

Stop Copy is a very early copy protection system that was generally used on videotapes from 1978 to 1983, though some companies continued to use the system until around 1986, when the system's successor, the Analog Protection System was released. This copy protection system resulted in tapes from around this time sometimes developing vertical-roll issues when playing on modern videotape players and/or modern television sets.

List of customers

 * 20th Century-Fox Video/Magnetic Video Corporation
 * Allied Artists Video
 * Fotomat Video
 * Home Vision Entertainment
 * MCA Videocassette, Inc.
 * Media Home Entertainment
 * MGM/CBS Home Video/MGM/UA Home Video
 * Paramount Home Video
 * Time-Life Video
 * VidAmerica
 * Walt Disney Home Video
 * WCI Home Video/Warner Home Video