Cards that aren't vulnerable to this attack are 10x-20x more expensive. I think it's great that a tool like this is being deployed widely into the hands of chi

Cards that aren't vulnerable to this attack are 10x-20x more expensive. I think it's great that a tool like this is being deployed widely into the hands of children (way better than chameleons/proxmark being in the hands of people who know what they are doing and everyone else thinking you're are a paranoid madman for knowing they exist), however it probably means that hotels are going to start charging you for not giving back your room key again before too long...