Solar-powered wireless routers you can just glue on top of lamp posts run by the sun. Stross, Doctorow. "Unwirer" (2003) She handed him the Motorola ba

Solar-powered wireless routers you can just glue on top of lamp posts run by the sun. Stross, Doctorow. "Unwirer" (2003) She handed him the Motorola batarang he'd glimpsed earlier. The underside had a waxed-paper peel-off strip and when he lifted a corner, his thumb stuck so hard to the tackiness beneath that he lost the top layer of skin when he pulled it loose. He turned it over in his hands. "How's it powered?" "Dirt-cheap photovoltaics charging a polymer cell -- they're printed in layers, the entire case is a slab of battery plus solar cell. It doesn't draw too many amps, only sucks juice when it's transmitting. Put one in a subway car and you've got an instant ad-hoc network that everyone in the car can use. Put one in the next car and they'll mesh."