1974: A supermarket cashier scans a multipack of chewing gum across a bar-code scanner in Troy, Ohio. It's the first product ever checked out by Universal Product Code. Some readers may be unable to ...
On a June morning in 1974, a Marsh Supermarket cashier in Troy, Ohio, rang up a 67-cent pack of Juicy Fruit chewing gum using something novel — the black and white stripes of a universal bar code. The ...