The consequence of that is if you do read it you effectively have superpowers over the non-readers.
The consequence of that is if you do read it you effectively have superpowers over the non-readers.
darktable used xmp, and that looks like an alternate metadata format, it looks like exiftools might be able to work with the xmp standard, and it looks like there’s some face tagging features in xmp.
https://photo.stackexchange.com/questions/106410/how-does-xmp-define-the-face-region
Welcome to the software commune comrade!