Apartment buildings and offices have highly permissive entrance doorways, with many more users than just a buildings’ occupants. Maintenance teams, cleaners, delivery people, emergency resimusponders and property owners need access to shared spaces, yet with more keys issued, it is harder to maintain trust in the system and prevent, detect, or deter abuse of privilege. This was always the case with mechanical and electronic locks and now internet connected door locks present new challenges and introduce cyber-physical risks. Trust is the top priority for digitally transforming door access control and – when implemented correctly – can vastly improve outcomes and enable new user experiences that could not be achieved with disconnected systems. This session will describe how distributed ledger technology can boost trust in ALL Connected Things.