PIN submit/SMS offers are those that require a confirmation text or pin submission via SMS to confirm subscription to a service. When a customer opts in to an ongoing mobile-based service/product, the commission is generated. Conversions are much simpler because the user is subscribing directly through their mobile bill. This is easier and quicker than generated a check-out with an online payment method. PIN submit offers tend to be for games, quizzes, adult services or prize draws.