Microsoft SenseCam is a wearable camera that takes pictures at various intervals, and can record infra-red information through a PIR (Passive InfraRed sensor). Accompanying software allows the events of a day to be indexed.
They are not for sale, and I would like to experiment with using something like this. I believe that it would make sense to convert a mobile telephone into a similar device, as they are easy to get hold of and generally contain a digital camera, Java/Symbian operating system, memory card and rechargeable battery. If anyone knows of any downloadable software that would perform this task, please get in touch via the ‘Contact’ link. Thanks!