Products in categories requiring approval can be listed only with specific permissions from Amazon. Only sellers with a Professional Selling Plan subscription can sell in these categories. Amazon limits access to sell in these categories to help ensure that sellers meet standards for product and listing quality as well as other category-specific requirements. These standards help Amazon customers have confidence when buying in any category.
Customers are given a time window of four hours for the package to be delivered. Once the courier opens the door, the Cloud Cam records a clip until the door is locked, which is sent to the customer's smartphone. Participants in the service can also use the Amazon Key companion app for iOS and Android to lock and unlock the door, monitor the camera, and issue virtual keys.
Amazon product lines include several media (books, DVDs, music CDs, videotapes, and software), apparel, baby products, consumer electronics, beauty products, gourmet food, groceries, health and personal-care items, industrial & scientific supplies, kitchen items, jewelry and watches, lawn and garden items, musical instruments, sporting goods, tools, automotive items and toys & games.