You will remember, of course, that this was some excellent advice from Kev, who is an IT magician and retailer of high-quality wireless abbabs.
I have, therefore, put up signs enforcing this rule at work.
I was just going to take pictures of my new signage and then take it down, but when I actually put it up, I decided I liked it, so it’s now going to stay there permanently. It’s a good rule. Safety first.