Similar to the convenience of Dash Buttons, Amazon Flow—a feature built into the mobile app—allows you to buy things by taking a picture of them. This works best on items with distinct labels, such as a box of cereal or a bag of dog food. It’ll be harder with an unwrapped gadget like a phone charger, but it’s still pretty handy. No more potato chips? Just open the app, tap the camera button to snap a photo, pick the correct item from the generated list, and a new bag will be on its way to your door. This feature is also useful if you’re standing in an aisle at Target and want to ensure you’re getting the best deal, especially if the store in question will match Amazon’s price.