Explore the concept of digital sovereignty and its critical importance in an increasingly turbulent world through this 46-minute conference talk from linux.conf.au. Delve into the potential challenges of a looming "Digital Winter" and discover how open-source solutions can provide hope for maintaining decentralized, self-sufficient communication systems. Learn about the development of a digitally sovereign smartphone and gain insights into creating technologies that resist subversion by hostile actors. Examine the role of the open-source community in preserving digital freedoms and discuss strategies for navigating the complex landscape of modern technology and geopolitics.