The Ultimate Arduino "Shield"

Yes, it will run USB webcams itself. To be fair I had to fudge it to run the cameras one at a time. I couldn't get a picture from both of them simultaneously. One is a Logitech and the other is an A4tech. I use the linux program 'Motion' in snapshot mode to take the pictures of the meters. It could be the version of Debian (squeeze) which isn't in final release yet.