How to Mask External input with ***** sign?

 
Dear Boaders,
Does anyone has any idea how to code asterik * sign in the external input dialoq box while we key in the numbers? The reason of doing so is because i have created a password to login to my EA for distribution and i wanted to mask it from preying eyes. Thank you for any help.

My code is this:
extern string Please_Enter_Password="0";
 
Very good issue!
The only way is hooking in the input box by using very advanced c++ programming! Which mean it's very hard way!

I hope that MQ consider your suggestion beside to add a drop down list input type. For example:

extren list MyList = {"red","yellow","blue")};

I hope!
Reason: