I work in a very secure environment that cannot have cameras as well. Our cameras are disabled in hardware by opening up the laptop case, disconnecting the camera cable from the motherboard, covering the camera lens with an opaque sticker, and then placing a tamperproof security sticker over a case screw. Our laptops are inspected by our security force by verifying the presence of the opaque sticker and tamperproof security sticker. Almost all laptops have separate cables for the integrated camera, however the unibody 17" Mac Book Pro that I just purchased does not. They had to pull the cable on the camera, Bluetooth, and WiFi all at once. I have to use a third-party wireless card for WiFi now but to me that's just part of the job.