I was kinda hoping that they'd changed that after 9-11.
How hard is it to beef up the cockpit (can I say that?) door hinges, tack a sheet of kevlar to the inside, bolt on a 1/4" steel plate top to bottom and then 2 or three deadbolts to secure the (oops - gotta use it again) cockpit?
Then maybe we could actually install unique locks for each plane. Put a little tag on they keys with the tail number and assign someone sock'em away in a safe between flights.
Really tough. Instead they'll no doubt study it for two years and come up with a "solution". I'm betting $500K per plane.