DataVault Unlocked: QR Codes

Did you know that some banknotes have QR codes? A QR (quick-response) code is a two-dimensional (2D) matrix barcode consisting of black and white squares that stores encoded data, such as website URLs, text or contact information. When a user scans the QR code, which can be done using a smartphone, they gain access to information about the currency, the issuing institution, or the commemorative events celebrated in the design.

In 2014, the Central Bank of Nigeria issued the first circulating banknote with a QR code incorporated into the design. The commemorative 100 naira celebrated the 100th anniversary of Nigeria’s existence. The QR code printed on the reverse leads users to a website about Nigeria’s history. The QR code is the same on every banknote.

A Polish 20 zloty commemorative note was issued in 2015 by Narodowy Bank Polski to commemorate the 600th anniversary of the birth of the historian Jan Długosz. The QR code was laser-engraved on the obverse against a white background and redirects to a dedicated website that tells the story of the notes.