Globally, ~30% of adult population (1.7 billion) still remain unbanked (yet, two-thirds of them own a mobile phone that could help them access financial services). This high ratio of unbanked/underbanked is not only issue of underdeveloped countries. Even in the United States, the Federal Reserve estimated there are 55 million unbanked or underbanked adult Americans in 2018, which account for 22 percent of U.S. households.