“They check your name against the no-fly list when you buy the ticket.”
They can check it now. And when I get to the airport they can ask for my Driver’s license, which they already do several times. I don’t see how it’s going to save them or me any inconvenience or make anyone safer.
Do they have the DOB and sex of the people on the No-Fly list? Then check that against my Driver’s license when I go thru security.
The check against the list is not done in real-time. That's why they are asking for the DoB when you buy the ticket -- so they will have time to do so. Currently, if you buy a ticket at the last minute, you are likely to get flagged for additional screening because there was no time to check your name against the list (it's happened to me several times).
Do they have the DOB and sex of the people on the No-Fly list? Then check that against my Driver’s license when I go thru security.
Yes, they do -- at least for most of them. Checking your DoB avoids the obvious screw-ups like flagging a 5-year-old or an 80-year-old for name matches to someone that is known to be in his 30's. Of course, they'll have to verify that you gave the correct DoB when you purchased the ticket.