Telefonica is facilitating Bango mobile payments with an application programming interface that will lead to carrier billing. Members of Bango's net include Facebook's App Center, Google Play and Amazon's Appstore. "It gives us a focus on app stores and frictionless, low-click payments. That's not what telcos do very well," said Matt Dicks, head of marketing for Telefonica developer platform Blue Via. Carrier billing is particularly important in countries where credit card and debit card penetration rates are low, such as in some parts of Latin America.