Sparrowvsrevolution writes "In an update to an earlier story on Slashdot, hotel lock company Onity is now offering a hardware fix for the millions of hotel keycard locks that hacker Cody Brocious demonstrated at Black Hat were vulnerable to being opened by a sub-$50 Arduino device. Unfortunately, Onity wants the hotels who already bought the company's insecure product to pay for the fix. Onity is actually offering two different mitigations: The first is a plug that blocks the port that Brocious used to gain access to the locks' data, as well as more-obscure Torx screws to prevent intruders from opening the lock's case and removing the plug. That band-aid style fix is free. A second, more rigorous fix requires changing the locks' circuit boards manually. In that case, Onity is offering 'special pricing programs' for the new circuit boards customers need to secure their doors, and requiring them to also pay the shipping and labor costs."