Crazy Security Tech from the Past #innovation #technology #smart #usa #lifehacks

This table was designed to protect shop owners during a robbery — with a hidden gun that fires automatically when the tabletop rises like a shield! 😱
Although it sounds like something from a spy movie, this real-life invention was never actually used.
And in ancient Japan, even the floors could “sing” to warn of intruders. Genius or terrifying?

🔍 Hidden inventions, secret mechanisms, and ancient security ideas that feel straight out of a movie!

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