Hotel keycards can be easily hacked in 200 milliseconds

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Hotel Key Card

With less than $50 of store-bought hardware and some programming, a hacker can gain instantaneous and untraceable access into over four million hotel rooms around the world, according to Cody Brocious, a Mozilla software developer.

He details his findings on his website. The time it takes once installed: around 200 milliseconds.

“With how stupidly simple this is, it wouldn’t surprise me if a thousand other people have found this same vulnerability and sold it to other governments,” said Brocious. “An intern at the NSA could find this in five minutes.”

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“Hotel Key Card” image courtesy of Shutterstock.

1 comment
  1. Nice video.  One correction: the port isn’t actually used for charging at all — the batteries are just standard AAs — but rather is used purely for communication.

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