Allows web pages to use identifiers for the purpose of protected content playback

This policy controls whether sites can use hardware-specific device identifiers to enable hardware-secure DRM (for example, Widevine L1 or PlayReady SL3000), which may be required for high-resolution protected content playback. If you enable this policy or do not configure it, sites are allowed to use protected content identifiers. If you disable this policy, sites are not allowed to use protected content identifiers.