> Proving that person is actually who they say they are can be dealt with in other means. I can't imagine a situation where you have a means of doing that and

> Proving that person is actually who they say they are can be dealt with in other means. I can't imagine a situation where you have a means of doing that and you can trust the official agent to perform it, but you can't trust the official agent to sign the image so you need the camera to do it.