

In transit, it’s impossible to get them all, though it should support PGP to anyone else that has it.
At rest, it should all be locked down so only I can access, they may have to store some messages temporarily until I connect to provide the encryption, but everything else better be completely inaccessible.
I used it once to charge my Pixel Buds and went “huh, that was neat, but inconvenient because now I have to keep my phone in one spot, can’t use it, and probably could just plug the buds into something nearby” then never used it again.