There's a guy who made something similar, except when you don't enter the password, it will record from a microphone (this is if you give it to the car dealership).
I've find a way to get a osk at the windows login screen.
It's verry helpfull for those of you who want to have a password at pc startup ant don't have a keyboard but a touchscreen.
Have fun with it!
It's from IBM(lenovo) and it's old but verry handy i think (oh and ugly as hell! ).
Here is a link.
download -> instal -> njoy at login