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.

Some developers would lead you to believe you need to download their app to scan QR codes. Spoiler: Your phone can do that with built-in features.

Use the built-in camera app on your Android device to scan a quick response (QR) code, or use a code scanner on older models.

Best QR code scanner for older Android phones While there are loads of QR scanners available for free in the Google Play store, the best option is Google's own Google Lens, which offers a variety ...

In terms of privacy, QR codes can’t actually store data—they just display it. How much information about yourself you’re giving away depends on the app you’re using to scan.

Since QR codes are essentially web links, approach them with the same caution you exercise when you see a web link in an email or text message.