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Not all smartphones require a third-party app to scan QR codes. Kurt "CyberGuy" Knutsson shows you how to scan codes using iPhone or Androids.
Your Android or iPhone can probably already scan QR codes. Here's how to do it no matter what phone you have.
QR codes can house a whole lot of data, from the URL of a webpage or service, to where to directly download an app. Here's how to scan them.
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