The Narrator : A Daily Activity Summarizer Using Simple Sensors in an Instrumented Environment

People tracking provides the basis for automatic monitoring. This service can help people with disabilities or the elderly live independently by providing day-to-day information to physicians and family. The Narrator system uses information generated by a tracker to generate concise, scalable summaries of daily movement activity. We demonstrate output from the Narrator as well as the workings of an underlying tracker in an instrumented home environment. We show that in a system made up almost entirely of sensors that do not report identity information, we can maintain identity information and recover from identification errors.