Originally Posted by
9VSWK
In the US, they check your BP name against your ID at a checkpoint, then scribbles on your BP. After passing WTMD, they ask for BP again.
1. What's the scribble for (im assuming its a signature)? Nobody else seems to check for the scribble.
Probably to mark that it has been checked and by whom.
Originally Posted by
9VSWK
2. Why check your BP again after couple of minutes when you've been let in because you have a valid BP?!
To verify you do not have SSSS. Should it have been missed initially and not re-checked, you would not be able to board the aircraft. This normally means TSA will have to respond to the gate and screen you there, in front of everybody.