Review on COOLOO Ultra Thin Metal Camera Cover Slide – 9 Pack for MacBook Pro, iMac, Computer, Smartphone, PC, iPad Pro, Tablet Notebook, iPhone 8/7/6Plus – Privacy Protector for Enhanced Online Security by Dave Hunt

I have installed these cases on their laptop cameras for friends and clients with no problem. Just look at the various light sources and sensors around the camera to determine its position. However, Apple has discouraged installing these types of covers on their new laptops due to the tight tolerances they can "break" the bezel around the camera when the cover is closed. Make up your own mind, but I haven't found any issues with any other laptop.