Not that I traveled frequently, but I've read all the stories about GE cards not being recognized by TDCs. A few days ago, I was at LAX T7 looking for PreCheck. Finally found a checkpoint upstairs, the only one I could reach the TDC without waiting in line. He didn't know where PreCheck was, but said his checkpoint would be faster than searching it, so I just went through that line, presenting my GE card and there was no question at all.

Now my question is whether the advent of the PreCheck program brought awareness to TSOs about GE cards. Or are they just relying more on surface or embedded features on the cards instead?