What amazes Chipchase is not the standard stuff that amazes big multinational corporations looking to turn an ever-bigger profit. Pretty much wherever he goes, he lugs a big-bodied digital Nikon camera with a couple of soup-can-size lenses so that he can take pictures of things that might be even remotely instructive back in Finland or at any of Nokia’s nine design studios around the world. Almost always, some explanation is necessary. A Mississippi bowling alley, he will say, is a social hub, a place rife with nuggets of information about how people communicate. A photograph of the contents of a woman’s handbag is more than that; it’s a window on her identity, what she considers essential, the weight she is willing to bear. The prostitute ads in the Brazilian phone booth? Those are just names, probably fake names, coupled with real cellphone numbers — lending to Chipchase’s theory that in an increasingly transitory world, the cellphone is becoming the one fixed piece of our identity.