1. Microsoft Research. Easy living. http://research.microsoft.com/easyliving/
2. GAIA—active spaces for ubiquitous computing. University of Illinois, Urbana-Champaign, IL. http://choices.cs.uiuc.edu/gaia/
3. Location privacy protection act and other privacy related law. http://www.techlawjournal.com/cong107/Privacy
4. MIT project oxygen. http://oxygen.lcs.mit.edu/
5. National Institute of Standards and Technology (NIST), Pervasive Computing SmartSpace Laboratory. http://www.nist.gov/smartspace/