Abstract: Systems and method of the present invention include a comprehensive system architecture that enables access to Non-bank financial institutions (NFBIs) and banks through point-of-sale devices and mobile telephones, for example. The present invention involves use of a modified ISO 8583 standard to allow users to interface with a front end processing system directly from non-traditional devices. The present invention also allows mobile banking with the NBFI through use of an application residing in a user's mobile telephone, which allows the encapsulation of user information as XML, for example, and the transmission of those over http while complying with the ISO 8583 standard, and further allowing encryption of certain user data, without having to resort to access to mobile banking website. In one aspect of the invention, a POS application may run on top of PCI to enable users to make purchases using funds pre-deposited in an NBFI account.