[Cryptography] stegophone

[Florian Weimer]

* Michael Marking:

> Sadly, the hardware is a big problem. No one as far as I know makes
> phones with a separate, isolated, unlocked computer side.

I think most smartphones have this capability (with multiple
implementations within the same phone, actually), but the device
makers do not use it in the way you want.  It's usually used to
protect data from access by the legitimate device owner, too.  (On the
other hand, that's probably the only way the user can convincingly
claim that they do not have access and avoid disclosing that data,
which is rather sad.)