Originally Posted by
nabco
The TSO checked me in but said I technically was not signed up for Delta Pre-Check and that's can do it on the Delta web site....
If I'm not mistaken, you can NOT sign up on the Delta web site (though you do have to opt-in). If you qualify as an elite medallion then Delta would have sent you an invitation email.
Otherwise, if you want to participate, you have to sign up for one of the DOS programs that pre-screens you with a background check and face-to-face interview (global entry, nexus, sentri).