Personally, if I entered a coma, one of the things that would be top of my list of things to remember is whether or not the NHS has managed combat the widespread problem of Health Care Acquired Infections within UK hospitals.
This would be a great concern to me as I would be very weak and frail in the ICU and catching a HAI would almost certainly complicate my already difficult situation.
Hang on! Wouldn't it be great if there was a way of reducing the spread of HAIs in hospitals using bluetooth technology? An idea like that could save the NHS millions of pounds! But most importantly I'd have a far greater chance of waking up in the first place, instead of dying, so I could get to use your fantastic system.
Just a thought.. ;)