What your safety man did not tell you is the law on recording is different in each state, I can call you from Indiana on the phone, record it, not tell you & it is legal. If we are talking anywhere person to person within Indiana one of us can record the conversation, not tell the other person or persons in the conversation, & it is legal in Indiana. In Illinois, part of what I described is legal the rest is not. Each state is different, check you state laws. It is not legal to place a recording device in a room leave it & walk away in all 50 states, unless you have a court order to place listening devices. Here is a link to each state law. www.mwl-law.com/wp-content/uploads/2013/03/LAWS-ON-RECORDING-CONVERSATIONS-CHART.pdf Your safety man was partly wrong. Take a peek @ what is legal & what is no for Oregon. Kind of strange law.