Mere days after Amazon launched its Fire TV_media streaming set-top box, the retailer is back with another device, this time to draw people into its AmazonFresh grocery service. Called Amazon Dash, it’s essentially a Wi-Fi and voice-enabled barcode scanner. So as your cupboards begin to look a little bare, the idea is that you pick it up and start scanning all the tins, boxes and bottles that you need restocked. They’re automatically added to your Amazon shopping list, so you can then finalize and submit the order online at any time. Now if you’re anything like me, you often throw...

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