Gearbox has released a special set of Golden Keys for use in Borderlands 2 that work on the Xbox 360, PlayStation 3 and PC, all of which are as follows:
These keys have unlimited uses, which means that an unlimited number of people will be able to use them—NOT that one person can enter them many times. Keep in mind that you can only use these keys once, but you can share them with your friends.
For more unlimited use Golden Keys in Borderlands 2, check out our full list of working codes here.
via Reddit.