Originally Posted by
l2travel2
I used my Costco card as ID to board a flight from ORD to DEN in July 2013
There have been several FTers that have used a Costco card for ID over the years, one even posted a pic of their BP with the appropriate Trained Document Checker squiggled "Costco" along with the usual other s0uper sekrit marks.

Welcome to the club!
Originally Posted by
stils
Yep. I used my sams card this summer.
Sams Club? I think you've made the first report!

^