 This is NPR News. From Little Rock Public Radio, I'm Nathan Treece. Hey, it's the 50th anniversary of the barcode this week. It's something most of us use every day in some form, but do you know how it works? The varied width of vertical black bars is akin to a short code translated into a unique number by the computer corresponding to the product information and pricing. Happy golden anniversary to the barcode. It's 850.