Originally Posted by
14940674
A number of PreCheck airports have a scanner at the beginning of the line.
So, the idea is, you're supposed to scan yourself; if 3 beeps then take pre-check line, if 2 beeps then take regular line?
Pre-check is not an invitation to take smaller line, only to be done in case of 3 beeps?
Seems clear, if there is a scanner there.