检验鉴定变形手印的思考

Thoughts on Identification of Transmutative Fingerprint

手印的形成受多种因素的影响,不同的影响因素从不同的角度改变着手印的形状、深浅、特征及整体质量;现场手印都存在不同程度的变形,直接影响检验、鉴定的准确性。经研究发现:作用力不同,形成的变形手印的特征不相同;在不同的客体上提取相同的留痕动作留下的指印痕迹也不同;特别是在使用指纹自动识别系统时,应注意指尖方向的判断,确保检验鉴定的准确性。

The form of fingerprint is influenced by several factors, the different factors determine the fingerprints into different shapes, depths, characteristics and the whole quality. As a matter of fact, the fingerprints at the crime scenes always transform to some extend, which directly influence the accuracy of investigation and identification. The study concerned indicates that the characteristic of transmutative fingerprint will be of difference with different action force upon it; the same fingerprints took on different objects sometimes show different characteristics, especially for application in automatic fingerprint identification system, we must pay more attention to the judge on fingertip direction, in order to ensure the accuracy of the identification.