I see this name mentioned a lot when I was searching information about Microsoft SenseCam.
I think he was the one who had been using Microsoft SenseCam for 10 years straight to experience himself how could lifelogging be introduced into commonality.
Here are some scraps from this Wikipedia article.
Mr. Gurrin now has 12 millions of images with size around 1 TB annually.
This is the amount of capacity that one produces with general lifelogging devices like Microsoft SenseCam.
The information retrieval is based on the events.
Personal search engine.
At simplest people would never forget where they had put their keys, ....
The current goal is to build complex search engine that can go look through the results those come from multi - modal sensor (audio, image, and video).
Here is the whole screenshot of th Wikipedia article.