%0 Conference Proceedings %B Proc. CHI Workshop on Defining the Role of HCI in the Challenge of Sustainability %D 2009 %T Sensing opportunities for personalized feedback technology to reduce consumption %A Jon Froehlich %A Everitt,K. %A Fogarty,J. %A Patel,S. %A Landay,J. %B Proc. CHI Workshop on Defining the Role of HCI in the Challenge of Sustainability %8 2009 %G eng