The start-up Wheelys in Shanghai has opened its first unmanned miniature convenience store that is open to the public 24 hours a day on 365 days a year. At “Wheelys 247,” customers can buy chocolate, cigarettes or potato chips as well as ready-to-eat meals. All they need is the Wheelys app to scan and buy the products. Customers also require the app to enter the store, which is meant to prevent shoplifting. In addition to that, video cameras monitor the premises.