What’s a time-of-flight (ToF) camera and why’s it on my phone?

Welcome to TNW Basics, a collection of tips, tricks, guides, and advice on how to easily get the most out of your gadgets, apps, and other stuff. When Huawei announced its P30 Pro, the latest models of its photography-focused phone series, one of its new features was something called a time-of-flight (ToF) camera. This bit of hardware has been appearing on more phones recently, with the Honor View 20 and the Oppo RX17 Pro already having one, but the P30 Pro is the bigge