| 摘要 |
A method for checking a digital signature correctly while taking account of individual variation of signature by capturing hand written character string information, comparing the information with preset registered signature data and dividing the information into a part which can be recognized as a true signature, an intermediate part which cannot be recognized as a true signature resulting in a request for another signature, and a part which is judged to be not a true signature. Based on the distribution of the accumulated error between the registered signature data and the signature data, the part which can be recognized as a true signature is made wider when the accumulated error distribution is wide otherwise it is made narrower. The intermediate part leading to a request for another signature is made wider when the accumulated error distribution is wide otherwise it is made narrower.
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