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Komando picks

14 unbelievable high-tech doors

Technology doesn’t exist in a vacuum, and when it advances, the benefits spread to nearly every field of design and engineering. See how the world’s top engineers have reinvented one of the most common household features, a door, in a variety of stunning ways.

Watch next video 12 of the world’s engineering marvels

Stop robocalls for good with Kim’s new eBook

Robocalls interrupt us constantly and scam Americans out of millions of dollars every year. Learn Kim's best tricks for stopping annoying robocalls in this handy guide.

Get the eBook