Already implemented (Score 3, Informative)

A small county in Denmark has already implemented this idea, aCon allows tourists to dial a phone number from their cell phones and via the phone recieve a detailed description af the attraction or site they are at. Not as "media rich" as this story's device this i think is more user friendly and less invasive in terms of privacy. Also it can be done via _any_ cellphone that works in Denmark, Europe.