The first bar code was used in my hometown:
http://inventors.about.com/library/i...blbar_code.htm
I remember this. We had a "new girl" in class whatever year in elementary school, Liz, and she was telling us her dad was a manager at the new Marsh Supermarket, and was telling us about the barcode!
And wolf? The product was Wrigley's gum! We've come full circle!