Do you mean you want to replace entered password keystrokes with "*" (asterisks)?
As already stated, we would need additional information to help point you in the right direction.
If you do a Search for this topic (password) within this forum you will find two primary options.
1. Use an "asterisk-only" font for the Password input box.
2. Use an INKEY() loop and echo back only asterisk * characters to the input GET box. The code, while straightforward, requires handling for backspace characters, escapes and others to cover all the user expected behavior.
thread182-1454716
thread182-55467
One idea is to set the background color equal to foreground color but then the user can't see anything being typed and you risk the user thinking it's not working. However please be advised that the text will still show up when the user highlights it, so to make the quickie solution more complete change the highlight to match as well. this will make the text truly invisible.
A couple samples to test whether robust or not:
@ 7,7 GET cPassword PICTURE "@X" COLOR "B/B,B/B"
@9,18 GET cPassword PICTURE '@' MESSAGE "Enter your password" COLOR (",X/B,,,,X/B")