If you attend a conference in the near future, you'll have to watch your badge: so-called "smart badges" will track every step you make, notice who you meet and send this information to a central computer where it gets visualized. Sociometrics is the new kid on the block and everybody wants to know everything about you, even at conferences. A new spin-off that produces these thingies is already underway and remember: it's all science! Really! (Source)