Originally Posted by MGUK

On a recent visit, I had a likewise unpleasant exchange with a check-in agent at the F section at JFK T7.
All I was asking of the agent was to print a traditional boarding pass (the BA electronic passes do not display "TSA Pre-Check").

The agent then started to ask me some unusual security questions, apparently due to the fact that I was seated in 63A.
I said I had already answered those questions electronically when checking in on-line.

Apparently I had to be asked them in person or my boarding pass would not be issued.
Well, I said that I already had the boarding pass issued in my phone. Had I not wanted the Pre-Check-valid paper boarding pass, I wouldn't have even stopped by the check-in desk.