That video is 10 years old. Technology has passed it by. If one's goal is safety, a surveillance system is the best way to go. I stay away from my front door when unrecognized individuals call on me. They can talk to the Ring and they know they're being recorded. I was at work and I had a visit from a utility worker that needed access to my back yard. We spoke over the Ring camera. I could see his truck's gas company stickers and his hat. I gave him permission and asked that he be careful with my dog in the backyard. Then I watched him until he left.