When the show is on, they cover the camera-run side with black curtains so that Housemates cannot see in. The glass works by not having light on the camera-run side but having light on the House side which makes it difficult to see through.
Kind of like a skyscraper or office building at night: from the outside when the lights inside aren't on, you CAN'T see in but from the inside you CAN see out.
Kind of like a skyscraper or office building at night: from the outside when the lights inside aren't on, you CAN'T see in but from the inside you CAN see out.