The shop has no sign. Or rather, the sign is obscured by some kind of bunting. The glass doors are papered over. You gotta know what’s back there, like a speakeasy. Venturing to open the door, I find I still can’t get inside. Between me and a cramped 180 square feet or so of convenience store-like shelves—yogurts, bags of exotically-flavored freeze-dried peas, refrigerators full of juice, and pre-packaged sandwiches—is a turnstile. It is a shop. I will shop. There’s a reader on the right. There’s an app. This is San Francisco, 2018. There is always an app. Get the app and give it a credit card—just like Uber and Amazon trained us—and the app will spit back a QR code. Krishna Motukuri, the guy running the show, calls that code up on his phone and flips it over for the scanner; the turnstile’s waist-high doors fold back. I saunter through. I’m in! I am shopping. I am free to pick whatever I want off the shelves. When I’m done, I get scanned back out. I have shopped. Read more at Wired.