we even covered RAR :-) Here are the slide decks
https://www.slideshare.net/TorstenLodderstedt/pushed-authorization-requests
https://www.slideshare.net/TorstenLodderstedt/rich-authorization-requests
https://www.slideshare.net/TorstenLodderstedt/pushed-authorization-requests
https://www.slideshare.net/TorstenLodderstedt/rich-authorization-requests