I find NFC very useful and interesting. I'm curently testing Poken which is very commercial but I found great potential in it. I used their free app to collect all data from the partecipants who attended a barbeque. Some them have more than five account (FB, twitter, flickr,G+...) you can exchange all your info via NFC (if you smartphone is enabled) or you can use a simple QR code and just scan it with the app from smartphone to smarphone. Starting from this everyone can immagin a lot of evolutions such as booking events, downloading informations meanwhile giving your references...
- More Info:
- Poken website