You're absolutely right, but the point of this thread is that sometimes there's not-so-prominent signage, posted with the presumable intent that you cannot see it, or aren't likely to see it. The OP posited that the motivation for that not-so-prominent signage might be entrapment. I offered that I think it's more likely that they want to ban guns on the premises, without losing the business of gun toters, who might not notice the "hidden" signage. I don't think anyone doubts the point of prominent signage. If one carries correctly, one will never have any trouble with any of this.