Turn your laptop into a NSA spying machine
stickonspy.com
stickonspy.com
I can't stand the thought of them pointing at me.
I've got a bit of electrical tape over the spycam on my own laptop. Mics I haven't disabled, though I suspect I should...
I often wonder if my MBP camera is necessarily off just because the ominous little green light isn't shining.
It just makes no business sense for the camera manufacturer. The CCD is a generic chip that spews clocked image data over some serial connection. Keep it simple and generic, and ship to any business who wants it.
You can have a camera controller IC/ASIC/FPGA/µcontroller one step up from the CCD that manages the CCD and LEDs. That would have either firmware or hardware support for LEDs, but you'd still imagine that it would be configurable for cases where there is no LED installed.
It's absolutely possible, and I don't know all the options out there, but I can't imagine a manufacturer shipping an off-the-shelf IC that _always_ ties an LED to CCD operation.
Perhaps not as often as one might wish.
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1. The CCD IC controls the LED
2. A intermediate IC has firmware that controls the CCD and LED
It is safe to assume that the LED is always controlled either by an OS driver, or by an intermediate firmware. I doubt it would ever be controlled by the 'final' camera IC.This means that, for Macbooks, running the CCD without the LED is _very difficult_, but, if the camera supports firmware upgrades, it is possible. And there could be undocumented commands to enable video without the LED.
If you're afraid of script-kiddies watching you read Reddit, you can probably trust the LED. If you're afraid the NSA has identified you as a special target, you probably cannot.