Do It Yourself Guide to RFID Enabled Windows XP Log In... But Be Careful

Try this at home yourself boys and girls only if you're an uber-geek with tremendous programming credentials and confidence in yourself. As for me-- more goober than uber --the answer is no way.

It starts off easily enough with this great explanation about why RFID is ideal for this application:

With RFID being impervious to dust and dirt, and being totally contactless, it's a perfect candidate for desktop authentication. In this feature, you're going to build a covert RFID enabled USB keyboard (Figure 1) that keeps its enhanced functionality a secret from the general public. You'll be using open source software to enable the login process on your Windows based computer.

But here's where I stopped reading:

Please take note: This project involves making changes to your Windows PC operating system and registry settings, which could render your PC inoperable. Proceed at your own risk. You should know how to make changes to the Windows registry and be comfortable with the possible risks before attempting this project.