I was traveling thorugh a small airport in Maine where I stayed for a few days in the summer with my folks. I took my bib but got another weight source up there.
So, when traveling through, the airport does not have screening for checked bags, so you must stand there while a security guy goes through your bag. He went through and actually picked up my bib, before going on with his checking for bombs etc.
It was freaky, but long story short, he did not care, and just sent me through, no questions asked.