One way encryption
It's so encrypted that it can't be decrypted by anything - even the owner.
A likely problem is that the Beast hasn't worked out a back door API deal with the self encrypting drive makers yet, and so can't uphold their commitments to various TLAs to keep that back door open. People might start encrypting stuff on their PCs that Microsoft can't grant access to recover.
Biting the hand that feeds IT
