Scanning a QR code without your phone requires a little help from Google or a webcam.

QR codes are a close cousin of the bar codes on product packaging that cashiers scan with infrared scanners to let the checkout computer know what products are being purchased.

QR codes are a close cousin of the bar codes on product packaging that cashiers scan with infrared scanners to let the checkout computer know what products are being purchased.

QR code attacks probably aren’t coming for your scan-to-order menus Stay away from the usual phishing red flags and you should be fine.

Question: Do I still need a separate app to scan bar codes and QR codes with my iPhone? Answer: Quick Response (QR) codes — those black-and-white square images often found on packaging — have ...