The term DRM-free, with DRM standing for digital rights management, is commonly used online to refer to content which can be downloaded and transferred by the user. Content which is not DRM-free cannot be downloaded and is only accessible on the particular app or website of the content provider. My question is, what is the antonym of DRM-free? A single word term would be desired as the phrases I considered sound quite clunky and verbose. An example usage would be:
Sadly, Jack could not transfer his music files to his friend as they were _______
Sadly, Jack could not transfer his music files to his friend because they (are protected by | use) DRM.– MonkeyZeus Dec 14 '15 at 16:23