Tech Explained: Smart Tags

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Imagine going to the grocery store, filling up your cart and then walking right out the door. No waiting as your purchases are rung up, no need for pulling out your debit card to pay. Instead, smart radio-frequency identification (RFID) tags allow an electronic reader to detect every item in the cart and automatically deduct the total from your account. This scenario is much closer than you may think. So, how does this smart tagging work, and what other uses will it have? RFID technology developed out of the use of radar in WWII with the first system created in…

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