Nokia is developing software that will help turn its phones into life loggers.
The Lifeblog software automatically arranges all the messages, images, videos and sound clips people capture with their phones.
The PC software organises information on a timeline and lets people add to the collection with images from other digital still and video cameras.
Eventually the software will let people publish some or all of the information they collect to the web to let them create their own biographical blog.
Regularly updated journals known as weblogs, or blogs, are hugely popular on the net.
Blogs are maintained about almost every subject from new technologies to political developments and many people use them as a kind of online diary.
Some sites such as Buzznet help people maintain moblogs or photoblogs which are journals that log what they are doing and seeing when on the move.