LifeLog was a project of the Information Processing Techniques Office of the Defense Advanced Research Projects Agency (DARPA) of the U.S. Department of Defense (DOD). According to its bid solicitation pamphlet in 2003, it was to be "an ontology-based (sub)system that captures, stores, and makes accessible the flow of one person's experience in and interactions with the world in order to support a broad spectrum of associates/assistants and other system capabilities". The objective of the LifeLog concept was "to be able to trace the 'threads' of an individual's life in terms of events, states, and relationships", and it has the ability to "take in all of a subject's experience, from phone numbers dialed and e-mail messages viewed to every breath taken, step made and place gone".[1]