Method and device for recognizing handwritten signature and starting system by handwritten signature

The invention discloses a method for recognizing a handwritten signature, which comprises the following steps: acquiring signature data and preprocessing the same; extracting global characteristic information and local characteristic information of the signature data; matching the global characteristic information with the global characteristic information of a preset signature sample and judging whether a first preset condition is satisfied; and if the first preset condition is satisfied, matching the local characteristic information with the local characteristic information of the preset signature sample; if the first preset condition is not satisfied, returning to the result of the failed matching directly; and if the matching result of the local characteristic information satisfies a second preset condition, returning to the result of the successful matching. The method can improve the efficiency and the accuracy of handwritten signature recognition so that a user can obtain a better using experience.