Are Amazon's AI-powered Go stores on their way to the British high street?

In case you missed it, the concept for Amazon Go is pretty simple. It's a grocery store where a shopper walks in, scans their smartphone as they enter, picks up their groceries, and walks out, completely skipping the payment process. Currently only available for employee beta testing, Amazon Go's first location is a small premises in Seattle but stores could spread like wildfire if the company iron out rumored technology teething problems. While they are currently cagey about details (we asked for an interview), the Wall Street Journal reports that the system in their first store can only handle 20 test shoppers at a time. To truly dominate the grocery market, size and choice matters, which means Amazon Go's current model could hamper mainstream adoption.