> How do you share a file on the web or via mobile client with low friction without rendering that client-side encryption useless? (A: You don't.) Exactly. Not

> How do you share a file on the web or via mobile client with low friction without rendering that client-side encryption useless? (A: You don't.) Exactly. Not all of us _need_ to share files, I just need a secure backup. And it is technically possible to access files on various clients using only client-side encryption and separate encrypted files from plain-text should you need to.