As a companion to Google’s brand new messaging app, the search giant on Wednesday introduced a one-to-one video calling app known as Duo. It’s a lot like other video chat apps, such as FaceTime, but it comes with one neat feature that sets it apart called “knock knock.” And, no, there’s no joke punchline coming.
Knock Knock essentially shows a live video stream of the caller when it starts ringing, even before you pick up. Google demonstrated how this feature works on stage, and it’s wonderfully charming. It adds intimacy to calls, and shows you what that user is doing even before they pick up.
Google said that Duo will proactively monitor network quality multiple times per second, and can seamlessly switch between Wi-Fi and cellular. This will ensure you get the best possible quality when chatting with friends and family who live across the country. Duo will be available this summer for Android and iOS.