Explore the complexities of security and privacy in multi-user smart homes through this USENIX Security '19 conference talk. Delve into design challenges, examine existing smart home platforms, and learn about a proposed prototype called Smarter Home. Discover design principles for respectful usage and user agency, and gain insights from an in-home user study. Analyze access control rules, household norms, and usability challenges in smart home environments. Conclude with valuable recommendations for improving security and privacy in multi-user smart home setups.