The <a href="https://en.wikipedia.org/wiki/Universal_Product_Code" id="mwASM" rel="mw:WikiLink" title="Universal Product Code">Universal Product Code</a> is scanned for the first time to sell a package of Wrigley's <a href="https://en.wikipedia.org/wiki/Chewing_gum" id="mwASQ" rel="mw:WikiLink" title="Chewing gum">chewing gum</a> at the Marsh Supermarket in <a href="https://en.wikipedia.org/wiki/Troy,_Ohio" id="mwASU" rel="mw:WikiLink" title="Troy, Ohio">Troy, Ohio</a>.