I've used Klarna once or twice when shopping online. The basic concept doesn't require a lot of details, I should think: You buy something, Klarna sends you an

I've used Klarna once or twice when shopping online. The basic concept doesn't require a lot of details, I should think: You buy something, Klarna sends you an invoice, you pay it just like any other invoice. I assume failure to pay is handled just like all other consumer debts. First they send you a couple of reminders, then they sell the debt to a debt collection agency.