Now here's a handy tool for getting into those locked things that you just don't have keys for! At the time of this writing (March 2016), however, this item has not yet been implemented.
How to Obtain
Someday, we might actually know how to obtain this item. For now, though, we must satisfy ourselves with imagining that we already have it.
How to Use
No one knows! Is it a permanent accessory? Is it a consumable? What locks will it pick? Someday all your questions will be answered. But not today.