PERSONAL IDENTIFICATION NUMBER CODE INPUT METHOD USING DOT PATTERN, PERSONAL IDENTIFICATION NUMBER CODE INPUT METHOD, AND INTERNET SHOPPING SETTLEMENT SYSTEM

摘要

A PIN code input method which is low cost and operated easily and ensures high security is presented. The PIN code input method specifies and inputs a plurality of identifiable symbol icons printed or displayed on a medium surface in a predetermined order, based on which order the PIN code is authenticated. The PIN code input method uses a dot pattern signifying a coordinate value or/and a code value formed on the medium surface where the symbol icons are printed or the visual surface where the symbol icons are displayed. The dot pattern is read by a scanner and converted into the PIN code according to the coordinate value or/and code value. The PIN code is authenticated based on the order of the PIN code read. Upon reading the dot pattern by the scanner, the orientation of the scanner relative to a vertical axis perpendicular to the medium surface or the visual surface is input together with the coordinate value or/and code value signified by the dot pattern as the PIN code.