and most QR tags contain the URL of a Web page that promotes merchandise or a service. See QR code. THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction requires permission.

The QR code may also be a phishing scheme ... also hides a lengthy URL so that the address in view seems valid. THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction requires permission.

Designed as a high-tech marketing resource, QR (quick response) codes have many useful applications. These (usually) black-and-white algorithmic codes are gateways to a potential multimedia nirvana.

Ever since Meta introduced a QR code-based feature to share Instagram profiles, users no longer had to spell out their account name to a new friend or type it out. The simple ‘Share Profile ...