Return a list of available devices.
This queries the system for the list of devices connected and it can be slow. You should cache this value by keeping a copy of the result if you want to use it repeatedly.
// Gets the list of devices and prints them to the console.
function Start () {
var devices : WebCamDevice[] = WebCamTexture.devices;
for( var i = 0 ; i < devices.length ; i++ )
Debug.Log(devices[i].name);
}