1. download and install autohotkey
2. right click on your desktop > new > autohotkey script
3. copy and paste the following, editing "yourpassword"

^1::
Loop, 9999 {
SendEvent, yourpassword{Enter}
Sleep, 2000
SendEvent, {Enter}
}
Return

Escape::
ExitApp
Return

4. save
5. run the script
6. type in your account name in the wow client, put cursor in the password field
7. press ctrl+1 to start it, esc to end once you're in
8. laugh at authenticucks who still do it manually