Hardware restrictions

copyright law in the United States of America

modification of Android devices to obtain root access

pattern of symbols incorporated into a number of banknote designs

characteristic of DVDs

dependency of customers on a vendor for products

alt=PSOne OneChip installation|thumb|A modchip, the blue circuit board, attached to a PlayStation (console)|PlayStation mainboard A modchip (short for modification chip) is a small electronic device used to alter or disable artificial restrictions of computers or entertainment devices. Modchips are mainly used in video game consoles, but also in some DVD or Blu-ray players. They introduce various modifications to its host system's function, including the circumvention of region coding, digital rights management, and copy protection checks for the purpose of using media intended for other marke

type of digital rights management

digital watermark which certain color laser printers and copiers leave on every single printed page, allowing to identify the device with which a document was printed and giving clues to the originator

Device tamper detection software

technical restriction built into mobile phones by phone manufacturers for use by service providers to restrict the use of these phones to specific countries and/or networks

campaign by the Free Software Foundation opposing digital rights management

software system where the service provider restricts access to non-approved applications or content

security lockout chip used in Nintendo game consoles

process of disabling secure booting to allow installation of custom firmware on a device

removal of limitations from the PlayStation 3