jPOS Programmer's Guide {jpos_version} 1998-2015 Alejandro Revilla / Uruguay All rights reserved. No part of this document may be reproduced in any form or by any electronic or mechanical means, including information storage and retrieval systems, without permission in writing from jPOS Software SRL (Uruguay). jPOS is an ISO-8583 library/framework that can be used to implement financial interchanges, protocol converters, payment gateways, credit card verification clients and servers (merchant/issuer/acquirer roles), etc. This document describes jPOS' design, its internals and shows you how to get the most out of it. Alejandro Revilla P Dave Bergert Extensive review, and multiple corrections Alwyn Schoeman Review, Feedback, Corrections Andy Orrock Extensive feedback and corrections Mark Salter Extensive feedback and corrections Murtuza Chhil Extensive feedback and corrections