We just returned from two weeks at the SIGMOD and MobiSys conferences where we presented demos of the RFID Ecosystem’s event detection infrastructure, Cascadia. Cascadia allows developers and end users to declaratively specify meaningful high-level events (e.g. “a nurse has entered patient X’s room with equipment Y”, “I leave the building without my car keys”) using a SQL-like sequence language or with an intuitive GUI called Scenic. Cascadia can then continuously extract these events over a stream of incoming, uncertain RFID data using probabilistic data management techniques. The Cascadia demos at SIGMOD and Mobisys illustrated Cascadia’s operation from end-user event specification, to event detection, to event notifications for one of two demo applications. The original demo proposals are available on our publications page; both demos are also entirely web-based and will be posted online sometime in the coming weeks.