Recently a the Dutch government advised to put a tape on your webcam to prevent hackers from taking pictures and video using your device (news article in Dutch).
The build in iSight camera in Apple laptops have a green light next to the camera, this light turns green when you use the camera.
Is it possible to use the camera without the activation of the green light? Personally I think the green light turns on when the sensor requires power and this is hardwired in the hardware. Am I wrong?
I have found similar questions on stackexchange, but I found non that answer this specific question.
Best Answer
"iSeeYou: Disabling the MacBook Webcam Indicator LED" is a paper by Matthew Brocker and Stephen Checkoway from the Johns Hopkins University. In this paper they explain on how to disable the LED when using the camera. In short: normally you use the CPU to access the camera and activate the LED, but you can also use the processing unit in on the camera board itself and this will not activate the green LED. The authors also provide software to protect you against these problems.
iFixit had the same question and their answer was also based on the same paper:
In short: Yes, the iSight can be used without green light as it is not hardwired.