Activity sensing in the wild: a field trial of ubifit garden.
Sunny ConsolvoDavid W. McDonaldTammy ToscosMike Y. ChenJon FroehlichBeverly L. HarrisonPredrag V. KlasnjaAnthony LaMarcaLouis LeGrandRyan LibbyIan E. SmithJames A. LandayPublished in: CHI (2008)