Hand Out Rulers
While it initially might slow some of the lines up, it shouldn't take too long for screeners to start to know what one inch heels look like.
I'm thinking of picking up some of those six inch plastic rulers and handing them out to screeners who can't determine one inch. Perhaps a number of us should buy them and start handing them out. At least it might get some notice.
Even better, we could do a group buy and have something imprinted on them along the lines about the one inch rule. "No metal, no 1 inch heel: let my shoes go." Suggestions?