Why Was the Peephole Invented?

Brown needed a way to feel safer in her apartment. Specifically, she wanted a way to see and hear who was at the door — from any room in the house. In 1966, Brown designed a closed-circuit security system that monitored visitors via camera and projected their images onto a television monitor.

What is the purpose of a peephole on the main door of the house?

In a door, usually for apartments or hotel rooms, a peephole enables to see outside without opening the door. Glass peepholes are often fitted with a fisheye lens to allow a wider field of view from the inside.

When did peep holes start?

In 1966, Brown, along with the assistance of her husband, invented a security system which consisted of four peepholes, a sliding camera, television monitors, and two-way microphones. These items created a closed-circuit television system for surveillance also known as CCTV.