Three hackers have created a stealthy lock pick in the form of a pocket-sized marker which can spring open locks used in at least four million hotel rooms worldwide.
This is no ordinary dry erase marker.
Three hackers have created a stealthy lock pick in the form of a pocket-sized marker which can spring open locks used in at least four million hotel rooms worldwide, Forbes Magazine reported.
"I guess we wanted to show that this sort of attack can happen with a very small, concealable device," Matthew Jakubowski, one of three hackers behind the device, told Forbes.
"Someone using this could be searched and even then it wouldn't be obvious that this isn't just a pen."
The tool can be used to open Onity locks, which are used in over 22,000 hotels across the world, in a split-second.
Jakubowski and his partners decided to build the small tool after the Black Hat security conference in July when hacker Cody Brocious showed that a port on the locks can be manipulated to open the doors without a key.
The port is only intended to be opened by the hotel's master keys.
Onity vowed to fix the flaw in August, but it remains unclear how many locks have been fixed, given the millions of dollars it would cost for hotels to swap out their locks for a more secure version, Forbes reported.
Jakubowski, a security researcher with the consultancy Trustwave, hopes that his tool will prompt hotels to be more serious about security.
"When you see a pen doing this it ought to open customers eyes a little more," Jakubowski told Forbes. "If you make customers more aware that this is out there, I hope that will put pressure on hotel lock makers to make sure their locks are secure."