Big Brother microphones tested: The Block is HOT!!

Picardi said he's even experimenting with a Big Brother bonus for unmarked police cars: a tiny microphone positioned near the windshield so powerful it can pick up conversations on the street.

"You could pull into a street corner and, if there's a drug deal going on a half-block away, you can hear what's going on. You could have all the windows shut and the air-conditioning on and you could hear everything going on outside the vehicle," Picardi said.