Hello, just watched an (IMHO) very interesting video about "OAuth 2.0 and the Internet of Things (IoT)" from the Nordic APIs conference that I wanted to share. It contains some interesting examples about proof of possession in the context of OAuth 2.0 and how to securely communicate with constrainted devices: https://www.youtube.com/watch?v=ZF0wrHtiXYw More videos (also from past years) about OAuth 2.0 and OpenID Connect can be found here: https://www.youtube.com/user/nordicapis/videos Cheers, Thomas