A Position Paper Managing Youth Screen Time versus Physical Activity - Encouraging Active Living in a Technological Focussed Generation Topics: e-Health and Education; Mobile Health Monitoring; Personalized Interfaces; Systems to Encourage Healthy Lifestyles; Wearable Technologies; Wireless Technology In Proceedings of the 1st International Conference on Information and Communication Technologies for Ageing Well and e-Health ICT4AgeingWell - Volume 1, 180-187, 2015 , Lisbon, Portugal