If I'm not sure, I keep an eye on the guy with my cash and ensure he's heading to the registers and not out the door. This happened to some friends and me about a decade ago, come to think of it. Largish group, a few people had come and gone, we'd been there a while. The scammer gave some plausible if you don't think about it explanation for why our regular waiter, who'd brought the check, wasn't picking up the cash. A few of us had felt something funny was going on but not strongly enough to not pay the bill… and by the time the false waiter had crossed the crowded restaurant and ducked out the door instead of heading to the till, it was too late to catch him. The restaurant was sympathetic it may have helped that some of us were regulars and we filed a police report, but the scammer got away clean that time. Adding additional speakers is easy and comes at a minimal cost.
outdoor wireless home security systems
Homeowners who are shopping at this price range are looking for home automation and video monitoring, something that all the providers, except Vivint, offer at this level.