AACS2 is the DRM scheme on BluRays (usually used on newer UHD ones) and has the ability to remotely revoke ability of decoding for players. That can either be d

AACS2 is the DRM scheme on BluRays (usually used on newer UHD ones) and has the ability to remotely revoke ability of decoding for players. That can either be done with payload on other discs or via internet connection if the player has it. They already did that for PC playback for example, revoking keys for several players.