My colleagues and I may be interested in buying this software to monitor our offices (in a hospital), because someone has been stealing things from us occasionally after-hours during the night or weekends.

However, I have been told that it could be illegal to record videos or still images of people, even if they are not supposed to be in our office area, and are clearly up to no good. Whether or not this is legal may also depend on the state (my job is in Massachusetts).

My co-workers and I have asked our employer if we can put a sign on the wall that says, "Video surveillance in use", but so far, they have not told us if we can put up such a sign and/or use a webcam to try to record the thief.

Do you have any information that would indicate whether or not it is legal for us to do this in Massachusetts? Seems strange that the thief may have more rights than we do. Thanks.