It gave companies detailed information about, say, how many seconds it takes a consumer visiting their web site to open their web page on a browser.

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Open a Web page, and your browser includes a single URL, but the page you are viewing is actually made up of content from all over the place.

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Quick Response, or QR, codes are a type of barcode loaded with information that, when scanned with a phone or other device, can open a web page, social media site or video (users first need to download an app, available for iPhone, iPad and Android).

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