Thanks a lot for the info. I'll see it.

hey there! shift codes gives you Golden keys to be spent at chest in Sanctuary spawn centre.
That chest is opened by a golden key, and give you some rare or, if lucky, legendary weapons and items
To redeeme that code-key, just click "extra" @ main menu', and write down the code or copy\paste it.
Shift codes are given away periodically at Gearboxsoftware, Borderlands2 fans, and Pitchfords twitter and facebook pages, like this https://twitter.com/GearboxSoftware , https://twitter.com/Borderlands2usa , https://twitter.com/DuvalMagic

Thanks. But what can you do with the code? What is Shift Code?

https://twitter.com/GearboxSoftware
PC / Mac SHiFT Code for a Golden Key In Borderlands 2: K3CJT-FRWZK-KRBBT-BJJ33-CB6TH [Active through January 6]