When Fallout 4 launched last November players quickly came across an NPC named Parker Quinn who offered to sell the player a “charge card” in exchange for caps. That is all well & good but the damn thing didn’t really do much, as one of our former editor’s found out in his lengthy impressions of the game.
As Kotaku pointed out on their YouTube channel – Bethesda’s open world add-on to Fallout 4, Far Harbor contains a hidden quest that is only available if you in possession of Parker Quinn’s charge card.