I can guarantee you this won’t work. The police won’t arrive nearly fast enough and you don’t have a lot of ways to stop him short of hiring a police officer as

I can guarantee you this won’t work. The police won’t arrive nearly fast enough and you don’t have a lot of ways to stop him short of hiring a police officer as a guard because private security often aren’t legally allowed touch people. Some people won’t be deterred by anything short of someone who is able to intimidate or harm them. It’s a no-win situation because allowing employees to hit people with clubs isn’t a good idea. :(