An Offline Check System with Reusable Refunds

Sangjin KIM  Heekuck OH  

IEICE TRANSACTIONS on Communications   Vol.E86-B   No.3   pp.1136-1139
Publication Date: 2003/03/01
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Fundamental Theories
electronic cash,  offline check,  reusable refunds,  

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We propose a new offline check system that allows refunds to be reused in payments. In this system, a shop issues a new check, called a refund check, for the change. The form of the refund check is much simpler than that of existing checks, and uses a more flexible and efficient denomination method. The new system also provides tracing mechanisms to counter criminal acts and considers the atomicity of transactions occurring in the system.