JIA Yu-wen,CHEN Xiao-hong. China Criminal Police University,110000.

  【Abstract】 According to physics, handwritings are some traces of writing tools on carriers under the function of forces. The dynamic features include the magnitude and variety of forces and speeds. This paper starts from the dynamic features and their attributes were researched in terms of Chinese handwritten signature. The results of experiments indicated that dynamic features were important basements which be used to identify writer, and also to distinguish imitated signatures.

  【Key words】 Handwriting，Signature，Dynamic feature