[kazazes]

These have been in New York City for years, but are labeled as EPA devices here. You can always find them on the block of a police precinct (sometimes right next to the front door) and in other major tourists spots (I've noticed them in Times Square and Grand Central).

[Kronopath]

Definitely, I've seen them around NYC as well, including on subway platforms. I've always wondered what they were.

[reustle]

There is always one parked in Union Sq station near where that cop on the segway parks. Also labelled EPA.