I have a friend who works at a small bar. And it has been said that not only is the bar under video surveillance but the owner is going to install several cameras with audio also. Is this legal? I feel as if it is ease dropping on peoples private conversations. Is there anything that can be done about this? I totally agree with the video but audio I think is a invasion of privacy.

Most stores have some sort of security system that involves video surveillance. But is it illegal for the cameras to also be recording audio - and the employees monitoring those cameras thus listening to private conversations? Or are customers foregoing such rights to privacy once they enter the store?