A digital copy is a commercially distributed computer file containing a media product such as a film or music album. The term contrasts this computer file with the physical copy (typically a DVD, Blu-ray, Blu-ray 3D, or Ultra HD Blu-ray disc) with which the digital copy is usually offered as part of a bundle. It allows the disc's purchaser to acquire a single copy of the film on a digital device such as a personal computer, smartphone, tablet computer, or digital media player, and view it on those devices without requiring access to the physical media. "Digital copy" is also commonly referred to as "Digital HD" (where it is referencing a high-definition or UHD digital copy).