Big thanks to mikemay for a great technical perspective.

And that's pretty much exactly what I thought it would be: files are created, probably stored (whether or not 'deleted') and no one knows who has access to these images or what privacy safeguards (if any) are.

Utterly disgusting. It's nothing but TSA taking a piss on the idea of privacy and liberties. They are dangerously close to crossing a red line, if they haven't already.