| 摘要 |
PROBLEM TO BE SOLVED: To economically perform a management by barcode information, even in a change of the information to be represented by a barcode, by use of a barcode holding body easily conformable to the change without any trouble by making the barcode itself attached to the barcode holding body changeable as occasion demands without sticking a new barcode holding body. SOLUTION: The barcode 3 of the barcode holding body 1 comprises a general code 4 and a stealth code 5 obtained by arranging a normally unreadable fixed character 50 consisting of a liquid crystal 6 changeable in display contrast and a space character 51. The stealth code 5 is revealed by the change in display contrast of the liquid crystal 6 under an influence of electric field change or magnetic field change so that the barcode information can be changed. |
