[xyzzy123]

a) You could use encryption; at a minimum you could render the image data opaque to the storage location. It would be much harder to protect metadata like time of access. You also lose the ability to view the data in a web application without voluntarily compromising security.

b) Perhaps sandstorm.io or owncloud integration.

I would be surprised if the company did anything like this though, it's unlikely to rise to high enough priority in their planned features list.

I agree that the set of people who worry a lot about this kind of privacy is unlikely to intersect much with the set of people who run a (closed source?) cloud integrated appliance on their door peephole, connected to a closed-source U.S. hosted web service.