helpmeh, i seen too possible ways of masking the input
First, Using a 3rd party program to add colors to the NT prompt, for example making the input line black on black,
Second, Using Getkey.com getkey.com accepts input in the form of one charachter at a time, the input as stored as the number of the letter on the keyboard and set into %ERRORLEVEL%
So basically it would be enterting the password 1 letter at a time, but instead of password the input and matching input from file would be something like 1273049048208202 , just a string of numbers.