The doorbell is a double-edged sword: it can signify the arrival of friends and loved ones, but it has a tendency to do so at the most inopportune times. i-BELL is a doorbell and video camera that connects to the home’s Wi-fi network and pushes an alert and live feed of the camera to any smartphone or tablet. Audio communication can take place or callers can leave a message if unresponded to. While the utility of this device is great and has built-in security features in case of threats or pranksters, it’s certainly not the first to try this and might get lost among Doorbot, Goji, and Chui. i-Bell will come knocking in November for £152.