Chances are, you’ve heard of the police code 10-4, which means “affirmative” or an acknowledgment of a message. But if you hear a police officer say 10-33, there’s a police emergency underway. However ...

Dannah Eve, a criminologist and safety expert, revealed why every family should have a secret code word to protect them from dangerous scenarios. “Here’s a safety tip for all of my families out there, ...

To communicate among themselves, the crew aboard a cruise ship uses secret codes. Photo: Getty Images On a cruise ship, many people come together. To prevent all passengers from immediately panicking ...