One of the problems when sending MS Word documents around is that sometimes the meta data that is a part of them can leak internal details. Things like actual meta data, but also comments and revision history. Typically when sending to an external collaborator you would have a system that strips all this information. But what if you could have both?
Introducing Meta Secure. A system that encrypts the metadata within the file itself. You log into meta-secure and it decrypts any meta information attached to the file (so long as you have access to decrypt it).