Technology That Stick at the Checkout Belt Has a Real Name
The little bar you place between your groceries and the next shopper's isn't a random idea — it's a patented product with an official name and a surprising history.
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2 articles Technology 
Technology Use the % Key to Calculate Discounts Instantly
Before you do the math in your head, try this: your phone's calculator can find a discounted price in one tap. Just type the price, minus, the percent, then %.