As Spencer reports, "They've even got part of the sidewalk cordoned off to accommodate the line."
Due to the curiosity factor during first hours of operation.
First cashierless Amazon Go store opens today. (Curbed, 1/22/2018)
Customers enter the 1,800-square-foot store, housed in an Amazon office building, through turnstiles after scanning their Amazon Go smartphone app. The store uses a system of cameras and sensors to track exactly what each person takes or puts back and updates customers’ virtual carts accordingly. When shopping is complete, customers once again pass through the gate, which will automatically charge their Amazon accounts.
He also notes that the number of people allowed in the store at any one time is limited by the city's fire code.