Method of checking authenticity of sheet with built-in electronic circuit chip
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Abstract
A method of checking sheets as to forgery thereof, the sheet being provided with an electronic circuit chip from or in which information can be read out or written and having visible information. The method includes a step of encrypting the visible information of the sheet and storing the encrypted visible information in the electronic circuit chip, and a step of determining discriminatively the authenticity of the sheet by comparing the visible information of the sheet with the information stored in the electronic circuit chip.
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Citations
14 Claims
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1-8. -8. (canceled)
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9. A system for determining authenticity of an object carrying visible information therein, said system including an authenticity determining unit and a memory unit,
said object including an electronic circuit chip which stores a unique number and is difficult to rewrite the same, and said memory unit storing said unique number and information common to objects of a same species as said object, with a correlation between said stored information and said unique number, wherein said authenticity determining unit reads out said stored unique number from said electronic circuit chip; -
obtains from said memory unit the stored information correlated with said unique number which is stored in said memory unit;
acquires information obtainable from said object by measuring or scanning; and
compares said obtained information with the information acquired by measuring or scanning said object to determine whether said object is authentic or not. - View Dependent Claims (10, 11, 12, 13, 14)
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Specification