Originally Posted by
Finkface
Meaning that just presenting the card alone does not grant PreCheck. Your KTN has to be in your reservation and PreCheck then has to be printed on your BP. Then, your BP has to scan with the 3 beeps at the doc checker (can be issues with it not reading properly etc). If all of the above are met, you get Pre. But just showing your card alone doesn't get you Pre.
Having Pre printed on the BP isn't mandatory, though it shows up all the time in practice now. It is the bar code.
Originally Posted by
Often1
There is no difference for any of the TTP's. It's not the card or the KTN, it's entering the KTN into the PNR (whether through your profile or for each individual ticket).
That s what triggers the DHS background to determine that you qualify for Pre-Check on each particular segment.
As a general proposition, if your information is all entered properly, you should see Pre-Check on your BP close to if not, 100% of the time.
The card itself is meaningless for TSA purposes.
I had my KTN in every PNR for the nearly 2 years that I was refused PreCheck.