DVD-Ds, also referred to as disposable DVDs,[1] were a type of disposable digital versatile disc/digital video disc that were designed to be used for a maximum 48 hours after the containing package is opened.[2] After this time, the DVDs became unreadable to DVD players[1] because they contained a chemical that, after the set period of time, will prevent the underlying data from being read by DVD drives.[1] [3] The medium in itself was copy protection neutral and did not require additional digital rights management types of applications to be installed for the content to be accessible.[1]