> I have an aplication that uses authentication (Users and passwords). I have a complain from one of my clients that what ever passwords he made thers one guy he has a small program he uses to review and reveal any passwords entered through the keyboard.
>
> How can I prptect my client and prevent the revealing of the passwords ?

hi,

I have key loggers working on my system just in case i loose the codes i typed. I can just copy paste.

key loggers can trap only keyboard events But not mouse clicks(i mean what is generated form the clicks.. It only says you did a click). Like If you have a virtual Keyboard From A-Z and 0-9 in button form on the screen like the layout of the keyboard and then user selected the password from the Keyboard layout by clicking the buttons of the virtual keyboard then the keylogger will be of no use atall.
Give it a try

SuhasHegde