"He slammed the lavatory door so hard, the cockpit crew heard it and became alarmed, even with the cockpit door closed and locked, " the airline said.

CNN: 'Rude' Alec Baldwin fled to toilet, booted from plane

However, changes in technology is taking this beyond the closed doors and locked databases of what HR understands about any individual, into the open field of social business.

FORBES: Shifting The Imperative From Knowledge Management To Expertise Management

These "locked" models bolted to a "closed" platform are opening fantastic opportunities for others.

WSJ: Thomas Hazlett: The iPhone Turns Five

Janet Vollmer closed her classroom doors, locked and covered the windows and began reading a story to her kindergarteners to keep them calm.

CNN: STORY HIGHLIGHTS

On October 3rd, when Archway employees arrived at the factory for the morning shift, they found the gates locked and a message saying the factory was closed.

NEWYORKER: Out of the Bronx

Authorities had halted public transportation, closed schools and advised residents to stay locked indoors for much of Friday during the manhunt.

WSJ: Boston Bombing Suspect Killed in Shootout

My advice is that if you really want to keep you life behind closed doors, make sure the door is locked.

FORBES: Should there be doorman-resident privilege?

But the doorknobs were left off, leaving two-inch-wide peepholes so the doors could not be locked -- and making it easier to keep tabs on the goings-on behind closed doors.

CNN: Boys And Girls Apart