1. Energy Neutral Activity Monitoring: Wearables Powered by Smart Inductive Charging Surfaces X. Fafoutis, L. Clare, N. Grabham, S. Beeby, B. Stark, R. Piechocki and I. Craddock Department of Electrical and Electronic Engineering University of Bristol, UK Electronics and Computer Science University of Southampton, UK xenofon.fafoutis@bristol.ac.uk irc-sphere.ac.uk

2. Sensing Technologies in Digital Health The Challenge Population is ageing Chronic illness is rising Paradigm change Self-monitoring Residential monitoring Wearable sensors need to be unobtrusive! irc-sphere.ac.uk

3. activity monitoring via accelerometers (&others) water consumption, electrical consumption temperature, light levels, humidity, air- quality base-station, +social media, +encryption analysis, pattern extraction, feature extraction data display Video Emotion, gait, activity, interaction The SPHERE Platform:

4. Energy Neutrality irc-sphere.ac.uk Dual challenge Energy consumption should be pushed down Harvested energy should be pushed up Our approach combines: SPW-1 ultra-low power SPHERE wearable Smart inductive charging surfaces Energy neutral wearable sensing system Charging surfaces are deployed on frequently-used furniture Wearable recharges whilst the user engages in activities of daily life Energy Harvested Energy Consumed Energy Neutral Limited Lifetime

5. Thank you irc-sphere.ac.uk X. Fafoutis, L. Clare, N. Grabham, S. Beeby, B. Stark, R. Piechocki and I. Craddock Department of Electrical and Electronic Engineering University of Bristol, UK Electronics and Computer Science University of Southampton, UK xenofon.fafoutis@bristol.ac.uk Twitter: @IRC_SPHERE