The ideas behind LifeLog are much, much older than the program itself. In 1945, a government scientist named Vannevar Bush described an idea he termed "Memex." It was, in some ways, a prescient flash forward to smartphones.

Memex, Bush wrote in The Atlantic in 1945, would be a "device in which an individual stores all his books, records and communications, and which is mechanized so that it may be consulted with exceeding speed and flexibility."

Of course, 1940s technology wasn't up to the task of recording a person's every conversation and everything they read. It took nearly 70 years for the tecRh to catch up to Bush's vision. In late 2001, Gordon Bell, a computer scientist consultant, volunteered to be the subject of MyLifeBits, a life-logging experiment run by computer scientists Jim Gemmell and Roger Lueder for Microsoft.

https://motherboard.vice.com/en_us/article/vbqdb8/15-years-ago-the-military-tried-to-record-whole-human-lives-it-ended-badly

https://www.theatlantic.com/magazine/archive/1945/07/as-we-may-think/303881/