With regard to the scope of surveillance cameras, the elevators in the GM building have cameras pointed down at an off angle; I thought they would be mostly useless until I was shown the (probably computer-modeled) contoured shell over the lens; on the far and, it produces a suprisingly broad and non-"fisheyed" view of anyone facing the front of the car. Image recognition is currently limited to a book of photos of people they (security) don't want in the building, though... When the real cost of such recognition systems is low enough that such run-of-the-mill rent-a-cops are looking to buy them, we've really got something to worry about. (How nice that Citibank credit card holders are all getting their faces digitized, for their security of course.) [cypherpunks content ends about here...] FYI, the George Washington Bridge carries much, probably most, of the traffic into Manhattan and New York City...) Most? Hardly. Don't forget the bridges and tunnels from Brooklyn and Queens, and the two tunnels from New Jersey, and... Someone I knew in grad school (they, not I) was doing surveys of Manhattan-NJ traffic, and measured some amazing throughput on the GWB, compared with the tunnels. I *was* being incredibly NJ-centric, though... andrew