refarence website

Future city
http://www.cityofsound.com/blog/2006/07/future_city_exp.html
Second skin
http://www.designwritingresearch.org/second_skin/second_home.html

Lego
http://mindstorms.lego.com/

Interactivity
http://www.interactivegestures.com/index.php?title=Main_Page

Tag, Code
http://en.wikipedia.org/wiki/QR_Code
http://en.wikipedia.org/wiki/RFID
http://en.wikipedia.org/wiki/E-Reader