How to disable webcam without voiding warranty?

You could just tape a piece of paper or cloth over the cam and in the event someone were to hack your cam they'd just get a blank picture

Not sure where the thread is for that - but, IIRC, the consensus is that the internal camera has a power LED that is part of the camera assembly. The light comes on when the camera has power, the light can't be controlled separately. It's on when the camera is on, and off when the camera is off (period).
If you prefer to not trust that idea (and I do understand..), and you don't want to open up your MBPro, then a tiny strip of tape will block any camera view. (already mentioned by rapicell, but it's effective)
I recently saw a school computer lab that had cutesy flower stickers covering the isight cams...

Small square of black electrical tape.

Tinfoil on your head helps with the paranoia part.

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DeltaMac said:

the consensus is that the internal camera has a power LED that is part of the camera assembly. The light comes on when the camera has power, the light can't be controlled separately.

Click to expand...

Published claim is indeed that the camera can be turned on without that light, albeit nothing spoke to what hardware/software platform that was.

Ccrew said:

Published claim is indeed that the camera can be turned on without that light, albeit nothing spoke to what hardware/software platform that was.

Click to expand...

Source of the claims circulating: http://www.washingtonpost.com/busin...2ba174-5397-11e3-9e2c-e1d01116fd98_story.html

B

http://osxdaily.com/2007/03/26/how-to-disable-the-built-in-isight-camera/

I haven't tried this so I don't know if it works still or causes issues.