Opening day check system and package

摘要

PROBLEM TO BE SOLVED: To provide an unsealing day confirming system that enables checking an unsealing day later by showing information when a product is unsealed by reading a dot pattern of the product package of food etc. and to provide a package.;SOLUTION: The unsealing day confirming system comprises: a package having a dot pattern that contains coordinate position code information and is visually un-identifiably printed for optical reading; optical reading means that optically reads the coordinate position code information; a storage device that stores a day when the coordinate position code information is read by the optical reading means as an unsealing day; and information display means that shows the unsealing day.;COPYRIGHT: (C)2012,JPO&INPIT