Hi Angus, there are patches people can wear rather than wrist devices. Have you linked into any of the healthcare technology manufactures yet? Can link you up if you would like. Do you want to cacth-up as i think we're looking at similar projects..

You could check out both isansys.com and snap40.com . One of my colleagues is aiming to develop this for hospital inpatients but I see no reason why the tech can't be used in a domicillary way. Can put you in touch with him if you want more background, etc.

i appear to have been added to this project in error please remove me thanks

Sorry but I'm incompetent about this issue.