If you want to tighten security on your webcam enabled laptop/PC with a webcam, you should give Blink! by Luxand a try. Learn, in this guide, where to get Blink! and how to use it to both protect your PC and track unauthorized login attempts.
Download Blink! here and install it on your PC.
When you install Blink! you’ll need to configure your webcam. First select the camera you’d like to use to track login attempts. In my case, I only have one webcam on my laptop, so I chose that one and clicked Apply.
Now you’ll have the chance to configure your webcam:
You’ll need to “teach” Blink! how to recognize you by turning your face from side to side (presumably so you can’t just use a 2D picture of yourself to log in.
Now you’ll need to prove you are really you (so someone else can’t lock you out of Windows and give themselves exclusive login rights with their own face.)
Now you can log in using your face. Unfortunately, I didn’t grab a screenshot of what the program looks like on my PC (as I would have to be able to take a screenshot of my login screen), but here’s an example from Luxand’s site:
Yeah, that’s not me.
You can even track login attempts with Blink! so you can see who has attempted to log in to your account.
Please note: As rsvr85 points out in this post, you should not rely on this program alone if you need to protect sensitive data. He personally fooled the software with a picture of himself on his phone.