Branchless banking brings much-needed financial services to the unbanked in both the developing and developed worlds. Leveraging ubiquitous cellular networks, these services are now being deployed as smart phone apps, providing an electronic payment infrastructure where alternatives such as credit cards generally do not exist. Over 30% of the GDP in many such nations can now be attributed to branchless banking applications, many of which now perform more transactions per month than traditional payment processors including PayPal.