I'm implementing my institution's PP templates -- like so many others. At our organisation we're often presenting classified stuff and we're supposed to include a slide with information about classification and remind people to take their electronics out of the room.
Ideally, the user shouldn't have to remember to include this slide by herself: If beamer is told that that the presentation contains classified information, then it should automatically insert this slide after the title page. For now, let's just assume there exists a boolean
As a workaround, I could do it as a transition on the title page template. However, that would look very strange when printing.
It feels like this question is related to Theme with a different footline for the titlepage (in principle, insert some stuff before and after should be equivalent?), but I haven't been able to proceed.
There is no MWE, as I don't even know where to begin. As such, I'm happy to just get pointers in the right direction, and I'll make sure to post a working result at the end.