FairPlay is a digital rights management (DRM) tool that Apple developed in-house. It allows the streaming of DRM-protected content on a range of devices, and now the Apple Watch is being added to that list.
FairPlay
Did someone just crack iTunes 4K protections?
A new report Thursday alleges that Apple's iTunes protections designed to prevent 4K video streams to be recorded or saved may have been cracked for the very first time.