Answer Your Door. Anywhere. Anytime with the Yale Look Door Viewer with WiFi. See, and speak to, visitors at your door from anywhere using the free Yale Look app for iOS or Android. The Look Door Viewer has a motion detector and doorbell so you’ll receive an alert on your smartphone when someone is at the front door. Engage in two-way communication with your visitors to let them know when you’ll be home and view a timeline history with photos and video to see recent activity.