Double Factors the Authentication was Researched and Applied in Ubuntu OS

At present,administrator or user who is often log in the operation system just use simple static password on.Double factors the authentication is a protection measures for administrator and user's password.This technology provides two parts password,part of password is static password which administrator need to remember,the other part of password is dynamic password that dynamic password code generates.The dynamic password changes a once after regular interval of time,Administrator or user need to input two parts password,including static password and dynamic password.Although this technology,host security has a great improved.