This is a nice little script that does what it says.
It enables upto two passwords for 3 save files, limits the amount of files you can load to 3, slightly animates the title screen
and provides an autosave feature.
i highly recommend disabling the save option in your menu if using this script, if you dont know how to do this yanflys menu script will help you out.
i uploaded this as a demo as it needs an extra file for the game title image
LINK <-v1.1
DEMO LINK <-v1.0
Dekita RPG 
Can Input Username and Password use Keyboard..??
Like your $D13x Script..>>https://dekitarpg.wordpress.com/2013/04/08/d13x-keyboard-name-input/
Nope , Sorry.