Short answer: Yes, a webcam cover is safe for a MacBook if it is no thicker than 0.1 mm, leaves no adhesive residue and covers only the camera.
What Apple says about camera covers
Apple's support page advises removing camera covers before closing a MacBook. According to Apple, covers that are thicker than 0.1 mm:
- can damage the display when the lid is closed
- can interfere with the ambient light sensor next to the camera
- can leave adhesive residue
What to look for in a MacBook webcam cover
- Thickness of 0.1 mm or less, about as thin as a sheet of printing paper
- No glue, so nothing can stay behind on the glass
- A small size that covers only the camera, not the light sensor next to it

How CamTag fits Apple's recommendations
CamTag reusable webcam covers are 0.1 mm thin and made of adhesive-free film, so they can be removed and reused without leaving residue. They come in five sizes, so only the camera is covered and nothing next to it. We tested several versions of the film and chose 0.1 mm as the best balance of thinness and durability.
Frequently asked questions
Can I close my MacBook with a webcam cover on?
With a cover that is 0.1 mm or thinner, yes. Thicker covers and sliders can put pressure on the display, so remove them before closing the lid.
Does a webcam cover affect the ambient light sensor?
A cover that is larger than the camera can. Choose the smallest size that fully covers the lens.
Will a webcam cover leave residue on my MacBook?
Not if it is adhesive-free. CamTag uses no glue, so it can be removed and reused.