Break-ins. Burglaries. Home invasions. Squatters.

Long gone are the days of not locking the door when you leave your house for the day. Criminals brazenly enter homes that are not theirs, and violate the one place we should always feel safe in.

The fear of having your home invaded by a stranger has lead to many innovations to make it more secure. But do they work?

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In the early 60s, Americans were introduced to a new kind of crime threat. With cases beginning in Boston and California, police were investigating murders that had striking similarities. Newspapers and television stations would give nicknames to the killers and run them in the headlines, striking fear into the public about who would be next.

Taking home security more seriously than ever before, people began doing whatever it would take to keep themselves safe at night. This included extra locks on every door. But with demand so high, could people get them installed before it was too late?
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Wednesday, November 24th, 1971. The man wearing a dark suit, sunglasses, and a parachute stood at the back of the Northwest Orient Airlines plane. Steadying himself, he pulled the lever and lowered the rear airstairs on the Boeing 727. A couple minutes later and he was falling towards the ground.

This hijacking spurred hundreds of theories, and changed the way aircraft were secured for decades after.
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