For a long time, the technology to build a fridge that scans items when you're getting them out so it knows to order more has been available. But like with most old-school industries, fridge makers suck at technology. Amazon, fortunately, doesn't. And that's why they made Amazon Dash. This nifty — and free — gadget is designed to hang out in your kitchen, scanning or otherwise letting you say food items that you use throughout the week, automatically building your Amazon Fresh shopping list for you. Yes, it's the future — but for right now, it's only available in SoCal, SF, and Seattle.