QR code

Definition Edit

A Quick Response code (QR code) is a

[m]atrix-style geometric barcodes displayed in magazines, on billboards and posters. Scanning them with a mobile device, such as a smartphone, directs that device to a specific URL, providing highly convenient access to information.[1]

Overview Edit

A QR code can hold up to 7,089 characters, compared with a typical barcode that can hold a maximum of 20 digits.

QR-enabled mobile phones allow consumers to scan optically and decode QR codes that are placed on items such as restaurant menus, posters, billboards, and other advertisements, and thereby receive coupons, product information, and other data on their mobile devices quickly and easily. Such codes are already being used with airline tickets and boarding passes, for example.

QR codes are currently used in mobile marketing campaigns in Japan and other Asian countries, and more recently in the United States.

Security Edit

QR codes "are specifically designed to be viewed and processed by mobile device cameras. Each QR code is translated to text, typically a URL, so malicious QR codes could direct mobile devices to malicious websites. This could allow for targeted attacking, such as placing malicious QR codes at a location where targeted users gather."[2]

References Edit

  1. Recommendations for Standardized Implementation of Digital Privacy Controls, at 18.
  2. NIST Special Publication 800-124r1, at 6.

See also Edit