Great example of taking an online social experience to the offline world for people. Hopefully there will be more of this to come.
Amplify’d from mashable.com
The problem with food ads is that you can only see the product, but you can’t smell or taste it. Until now, that is.
In Germany, a billboard for the GranataPet brand dog food lets consumers (or actually, their dogs) get a sample by checking in via Foursquare. As this video shows, once you check in, dog food comes out of a dispenser at dog level. As detailed, the checkins are noted on a distant server that is connected to a black box in the billboard that controls the dispenser.
See this Amp at http://amplify.com/u/bx4zq