You can get your password quickly in password field if you have Logitech G-15 keyboard.
Step one : Press MR button on G-15 (or go to command panel [w/e]in your computer)
Step two : Select G-Button, for example G1
Step three : Write your password, for example : mypassword1
Step four : Press MR button again, or something that finishes process of entering macro. ^^
Step five : Start World of Warcraft
Step six : Enter your account name and move to password field
Step seven : Press G-Button, for example G1
Congratulations, your password is now successfully in field, now press Login and enjoy your unique feeling of at last finding out a way to press 1 button for your password!
This also should confuse keyloggers. Im not sure tho..
Hope you enjoy mah great tip, which i found out by myself