How Hackers Opened Hotel Doors With A Pen 😨

The marker is shoved into the hole at the bottom of the lock. And instead of a pen tip, a small plug slots into an electric port. A microcomputer inside the pen's casing reads the lock's key code through the port. And once it's received, it can open the lock in less than a second. Just like a keycard. This hack worked on one particular brand, which was installed in millions of hotels

across the world. And since it was difficult to fix, hackers could walk into pretty much any of these hotel And since it was difficult to fix, hackers could walk into pretty much any of these hotel rooms, all with a simple homemade device.