Your Android or iPhone can probably already scan QR codes. Here's how to do it no matter what phone you have.

If you scan a malicious QR code, scammers can get your information in several ways. The link could infect your phone with malware, although it is more common for the QR code to take you to a fake ...

QR codes can have custom designs, including different colors, backgrounds, and logos. By adding design elements to QR codes, you increase the overall size of the code.