The members of the house no more need to keep the house keys with them, nor do they need to duplicate it. They just need to face the camera that scans the face of the person ringing the bell and the door opens if it recognizes him or her to be a member of the house.if the person ringing the bell is an intruder , the owner receives an email of the intruder. This also solves the problem of losing keys or remembering passwords.Also as soon as the visitor rings the bell, the camera on the door live streams the persons video on the owner's phone.then if the guest to come in, he can use the app to open the door via Bluetooth from where he is.