Originally Posted by
studentff
I wonder if one of the reasons for including gender in the required (in-)Secure Flight (iSF) data from all passengers was to eventually avoid this situation in the future. If BPs were coded with iSF data and TDCs (or even WTMD/NoS moat dragons) were equipped with barcode scanners and scanned every BP, they could answer the gender question without asking it.
Secure Flight requires the data listed on the passengers documents. Gender may not always match what is listed on said documents.