The deployment of a traffic camera a day keeps the mortician away in the nation's Jersey barrier capital, or so goes the justification to expand the intrusive practice. We all have our privacy threshold, some more liberal than others, but the city is on pace to test the resolve of the most open-minded with its seeming addiction to snapping and fining. More cameras are coming our way, predictably enough, because it is the low-maintenance police work that keeps on filling city coffers.