LifeLog was a project of the Information Processing Technology Office of the Defense Advanced Research Projects Agency (DARPA) according to its bid solicitation pamphlet, 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.”
“LifeLog aims to compile a massive electronic database of every activity and relationship a person engages in. This is to include credit card purchases, web sites visited, the content of telephone calls and e-mails sent and received, scans of faxes and postal mail sent and received, instant messages sent and received, books and magazines read, television and radio selections, physical location recorded via wearable GPS sensors, biomedical data captured through wearable sensors, The high level goal of this data logging is to identify “preferences, plans, goals, and other markers of intentionality.”
The DARPA program was canceled in 2004 after criticism from civil libertarians concerning the privacy implications of the system, but it may be operating in secret. 
Every detail of a person’s life will become the property of Big Brother’s government bureaucrats as technology continues to invade the lives of individuals. We can see this taking shape today with the NSA spying and government expansion programs. When the Antichrist rules the world during the Tribulation, he will have complete access to information about everyone on earth.