Ah ok, I wonder why they call it that then. I still don't know what a "security-type" is then. Is that one of those metal briefcases that criminals always pay

Ah ok, I wonder why they call it that then. I still don't know what a "security-type" is then. Is that one of those metal briefcases that criminals always pay each other with in the movies? Always full of dollar bills of course :) Cash boxes, I don't really see why they should be prohibited as long as the owner can open them for inspection. But anyway, it's not something I would bring anyway. And yeah the lithium is a long-standing problem of course.