I had a visit from a door-to-door security salesman today. The deal was if I put a sign in my yard to advertise, I would get a free system. He mentioned a couple of my neighbors by name and said they had just signed up (and they hadn't). He wanted to come in my house to look at my current system to see if it was compatible with their service, even though I told him I wasn't interested. He had an ID badge with the company name on it, and then pulled out his driver's license (but it was a Utah license, so I wouldn't know if it didn't look right). Anyway, maybe he was legit, maybe not. But just so you know, a friend of mine who also lives in the neighborhood said that security company employees should have something called a blue card that shows they are licensed through the department of public safety... and this guy didn't show me anyting like that.
Sorry I don't remember the name of the company... it wasn't one I'd heard of before, and he didn't leave a card.