A method and system for operating a duty-free article shopping mall provides only a user whose exit and/or entry is confirmed with services such as order, payment and delivery of duty-free articles via a computer network. The method and system include the steps of introducing information supported by...http://www.google.com.au/patents/US6609107?utm_source=gb-gplus-sharePatent US6609107 - Duty-free article shopping mall operating method on computer network and system using the same
