"PayPal Mobile Express speeds up the purchasing process on mobile," Mr. Horowitz said. "This means fewer page loads and less information to type--two huge factors when shopping from a phone."
Because they hasten the purchasing process in a setting where speedy checkout is key, alternative payments have the potential to boost mobile conversion rates, some experts say. That is the goal of Branding Brand, which has begun integrating the PayPal mobile payment mechanism with a variety of clients, GNC being the first out of the gate.
"Our technology makes it easy to automatically bring PayPal Express Checkout into mobile; and up until this point, nobody thought it was possible," says Chris Mason, co-founder of Branding Brand. "For those with PayPal Express Checkout on their e-commerce site, this is a game-changer for increased mobile conversion."