NEW YORK (WCBS 880) – Privacy advocates are concerned about a pilot program that's scouring faces at MTA bridges and tunnels – but so far the program's been a dud.

As you drive on the Robert F. Kennedy Bridge or through the Queens-Midtown Tunnel, cameras keep watch and scan your face using facial recognition.

Officials say the cameras are looking for terrorists and violent criminals.

“We are testing the technology, and all others that will help us keep New Yorkers safe, while protecting their civil liberties,” a spokesperson for Gov. Andrew Cuomo told The Wall Street Journal.

But according to the Journal, which obtained an internal MTA email from November about the cameras, the RFK Bridge recognized no one.

The Journal reports that an MTA official wrote a senior Cuomo official that “initial period for the proof of concept testing at the RFK for facial recognition has been completed and failed with no faces (0%) being detected within acceptable parameters.”

In addition to the RFK and Queens-Midtown Tunnel, there are also cameras at the Hugh L. Carey Tunnel, the Throgs Neck Bridge and the Bronx-Whitestone Bridge.

One driver said he thinks the program might be going too far.

“I think we should know, have knowledge on that,” he said. "Is that all they are doing it for?"

Civil liberties watchdogs have raised concerns about big brother and privacy. They also warn that the emerging technology may be prone to making mistakes.

Nevertheless, the MTA is pushing ahead and continues to test facial recognition at its bridges and tunnels.