This is really cool! I found a couple of projects online (e.g. http://www.randombio.com/webcam.html http://www.randombio.com/webcam.html) where people tested ou

This is really cool! I found a couple of projects online (e.g. http://www.randombio.com/webcam.html http://www.randombio.com/webcam.html) where people tested out their webcam counter by using a smoke detector as an alpha source, and had some success.