TECH TALK | QR codes: behind the matrix of those little black and white squares

By Mathew Dickerson
Updated July 2 2021 - 1:52am, first published November 12 2020 - 2:00pm
It's more popular now than ever, but did you know the QR codes had been around since 1994. Picture: Shutterstock.
It's more popular now than ever, but did you know the QR codes had been around since 1994. Picture: Shutterstock.

Back in 2015 I thought I was being very clever with my business cards.

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