I'm not sure, because I haven't really looked at any of the api's, but I'm pretty sure that it's hardware controlled. Internally it's hooked up via USB, and non

I'm not sure, because I haven't really looked at any of the api's, but I'm pretty sure that it's hardware controlled. Internally it's hooked up via USB, and none of the software I've seen has used the camera without the light on (including non-Apple software).