密码锁，这是一个六位的密码锁，双性密码锁，当你按下“change”是可以方便修改密码-code lock,it is a 6 numbers code lock. it is can double the males and when you change the code then enter "change"

一套基于Android平台的锁屏幕源代码，功能齐全强大。-A set of Android-based lock screen application source code, full-featured powerful.