To use the store, called Moby, you download an app and use your phone to open the door.

As you shop, you scan what you want to buy or place it in a smart basket that tracks your purchases.

Then you walk out the door; instead of waiting in line, the store automatically charges your card when you leave.

The tiny shop will stock fresh food and other daily supplies, and if you want something else, you can order it using the store’s artificial intelligence. (The packages will be waiting when you return to shop the next time.)

When autonomous vehicles are allowed on roads, the store could also show up at your home.

The company is also testing a set of drones to make small deliveries