一把好用的锁，非常好用，如果忘记密码，把它卸载了就行了，这个是给文件加锁的，加锁时可以删除、复制、移动、但是打不开-A nice lock, very easy to use, if you forget your password, unloaded it on the line, this is a file lock, the lock can delete, copy, move, but could not open