ON Digital set top box decoder card, used with digital terrestrial television (DTT) system, manufactured by ONDigital, 1998-2002.
In Britain the first terrestrial digital television services, which were introduced in the late 1990s, were pay-to-view rather than free access. Viewers subscribed to a service and were sent a unique decoder card, like this example, to use with a set top box. ONdigital, later ITV Digital, offered an early digital television service. However, the service closed in 2002 as it was unable to compete with the better established satellite services offered by Sky.