The airline said it is sharing its plans for the locking device with other U.S. carriers.

CNN: American Airlines strengthening cockpit doors

The prosecution told Birmingham Crown Court Network Rail would not spend money on an automatic locking device.

BBC: Jane Harding

Ted Scott, the American Trucking Association's director of engineering, said an automatic locking device secures the pin into the fifth wheel.

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Mr Mott told the court although it may be a case of "human error", Maund's former employer Network Rail was equally culpable for Mrs Harding's death because it had not fitted an automatic-locking device at the Moreton-on-Lugg crossing as part of improvement works there.

BBC: Hereford & Worcester

Other jurisdictions, notably New York City, make it a crime for owners or custodians to leave the weapon in such a manner that it is out of his or her immediate possession or control without making it inoperable by employing a safety locking device.

FORBES: What's Missing In The Gun Control Debate Is Talk About Gun Safety At Home

Then, after locking the device, attempting to unlock it will send you to the palm authentication screen, seen above, where (hopefully) only your mitts will be able to gain access.

ENGADGET: KDDI's smartphone palm authentication app unveiled at CEATEC 2012 (hands-on)

Penalties for employees caught unlocking their phones could include removing access to email and firewalled apps, immediately blocking communication, and locking or wiping the device.

FORBES: How To Protect Your Company Against The Risks Of Unlocked Phones

Nothing gladdens our hearts more than seeing yet another paranoid parent kid tracking device aimed at locking down the hearts, minds and loins of today's youth.

ENGADGET: DriveSync tracks your kids' joyrides