Pace
Unless technology could continually identify the person at the controls throughout the flight, you suggestion wouldn't work.
Applying it to 9/11, the first, airline crew, would be identified and the controls unlocked for them - a hijacker subsequently sat in the Captains seat whilst, technologically, it was systems normal in flight.
If your technology detected a new Alien at the controls in flight - as happened in 9/11, or even an approved 15 yr old visitor - what would technology do ? Freeze the controls and shut down the engines ?