摘要
引言
自前用于身份验证的特征主要有两类：非生物特征和生物特征。前者是指口令、证件、钥匙、PIN码（个人密码）等；后者是指人体本身所固有的物理特征（如指纹、掌纹、虹膜、脸部等）及行为特征（如笔迹、语音等）。非生物特征虽然简单却不可靠，如口令可能被忘记或被猜测，甚至被窃取。
The character of identity verifying is categorized into biologic feature and abiological feature. The former one means password, paper, key, PIN （personal identification number）, etc, while, the latter refers to physical trait （fingerprint, palm print, iris, face） and action trait （handwriting, voice, etc.）. Abiological feature is simple but not reliable for it is easy to be forgotten or recognized, even stolen, but biological feature is much more dependable and stable, what＇ s more, it is unique. It is undeniable that signature belongs to action trait, and signature discrimination is just a technique taking use of such character. This essay introduced the signature discrimination technology and its implement process.
