This is how Apple's ARKit is about to change how everyone uses the iPhone

Even if you've seen Apple's ARKit in action, there's a chance you're still not convinced it'll mean much for you. That's all about to change thanks to a new demonstration of its power recently posted on Twitter. 
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London-based developer Andrew Hart used ARKit with Apple's CoreLocation to create a version of Maps that puts guidance arrows and pushpins over the real world. And it's brilliant.&nbs