Comment by aexer0e

> 'screenshotting' is done by the operating system, and exposing ways to allow apps to know that they were 'in' the screenshot plus expose some metadata of their choosing sounds like a privacy nightmare

The apps don't have to know a screenshot was taken for this feature to exist; they could write into a passive "in case a screenshot is taken, use this as metadata" object data field that the OS uses when the user takes a screenshot