Mark Zuckerberg introduced large numbers of people to the idea of taping over their MacBook’s camera when, in 2016, he uploaded a photo that revealed a few of his security measures.
But Apple says using camera coverings can hurt MacBooks. In a new support document, Apple notes that covering the MacBook’s built-in FaceTime camera could interfere with the computer’s ambient light sensor, which is located next to the camera. The sensor controls True Tone and the Mac’s automatic brightness feature.