Defeat Keyloggers
How Keyloggers Work?

When you type on your keyboard, the keys travel along a path within the operating system before it arrives at your browser. Keyloggers plant themselves along this path and observe and record your keystrokes. The collected information is then sent to the criminals who will use it to steal from you.

How Key Scrambler Protects You?

Key Scrambler defeats key loggers by encrypting your keystrokes at the keyboard driver level, deep within the operating system. When the encrypted keystrokes reach your browser, Key Scrambler then decrypts them so you see exactly the keys you've typed. Key loggers can only record the encrypted keys, which are completely indecipherable.

Unlike anti-virus and anti-spyware programs that depend on recognition to remove key loggers that they know about, Key Scrambler will protect you from both known and unknown key loggers.

The bad thing is it only works for IE and Firefox, no Opera

http://www.qfxsoftware.com/products.htm
https://addons.mozilla.org/firefox/3383/ --- FF plugin