Maybe it’s better to call them hamsters, but apparently in order to locate drop zones around NYC, some company (either Cingular or TMobile) have contracted Ericcson to place antennae in 50 cabs ^[1]. They hope to find the drop zones by relying on these cabs traveling a wide range of NYC streets and finding holes that might have otherwise been missed.

I would think that all NYC cabs should be tracked through your cell phone and you would be then able to actually hail one easily. Kind of like the gaydar for empty cabs.