Amazon makes a store
Amazon officially launches a store called 'Amazon Go', and the store will be located in places such as Chicago, New York, San Francisco, and Seattle.
A lot of people were amazed at how advanced this store was. You download the app then you scan the bar code at the front and it looks like the things you would find at a train station but instead of a card, a bar code will appear, you scan it, and then you go in.
To know if you got the item to scan you first check the Amazon Go app. If you leave, you will see a pop up after 10-15 minutes that will make the item appear. The Amazon Go will also allow you to take anything and keep it in your bag without going to the check out line, which may be long and stressful.
Even if you forget your wallet, this isn't a problem for Amazon Go!
If you wanna know how they do it and you're in one of the areas mentioned above, go check out the store!