掌纹识别技术发展至今已经十年，但与人、 虹膜以及指纹识别等技术相比，掌纹识别还是一个较新的技术，尚有很多问题需进一步研究。-Palmprint identification technology has been for decades, but with people, iris and fingerprint recognition technology compared to palmprint recognition is still a relatively new technol