A Flexible Multi - Currency Electronic Payment System (EPS)
Okafor C. A, Okafor, E. G, Abdullahi S. E
Journal of Information & Systems Management, Vol. 4, No. 4, 2014.
DOI: 
Link: 
Abstract:
This paper presents an implementation of a flexible multi-currency electronic payment system. The proposed system operates in local currency and also has the functionality of making payments in different currency. This was made
possible by incorporating a currency converter module into the developed system. The  technological approach adopted in this work was based on open source solutions. The system is implemented on web-based platform. Apache was used as the Web server with PHP scripting language for server side processing. Open-SSL library was used for data encryption, and rolebased authentication was built into the system as security pass-mark for accessing information in the database.