Somehow I just keep loosing those medallion tags you're supposed to put on your carry-on luggage. But, I just got fresh new ones with the new credentials that arrived last week.

But even having them on my carry-on doesn't seem to have much use. I don't think they're considered official, as your BP or card would be.

So, are they supposed to have any other purpose than just proclaiming to others that you're a medallion? And how many people even use them?