If you get close enough to another person who is also running the plugin on their phone, you are provided with a link to their profile the next time you login to Facebook. It was developed as part of a research project also called CityWare, partly funded by HP, Nokia and Vodafone.
Online cruising just took a quantum leap forward.
This article available online at:
http://www.theatlantic.com/daily-dish/archive/2008/02/a-facebook-phone/220086/
