Google launches Duo, a barebones video calling app

At Google I/O 2016, Google announced two new and separate communication apps: Allo, a new instant messenger app, and Duo a video calling app. Today Google announced Duo is finally rolling out to the masses on Android and iOS.

Google Duo is a video calling app and just a video calling app—it does one-to-one video calls and nothing else. It's also only available for mobile phones—there are no Web, Chrome, or desktop clients. It doesn't even require a Google Account—Google says that "all you need is your phone number and you’ll be able to reach people in your phone’s contacts list."

Duo has two features. The first is that the video calling is claimed to be "fast and reliable" even with limited bandwidth. It can switch between Wi-Fi and cellular data without dropping the call and can "gracefully degrade" the video when bandwidth gets low. The other feature is called "Knock Knock," which shows live video from your contact on the incoming call screen before you even answer the call. Knock Knock doesn't work on iOS right now. On the security side of things, Google notes that "all Duo calls are end-to-end encrypted."

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Source: http://arstechnica.com/