"Do you really know?" is Bababam's daily podcast, which helps you understand the words, acronyms, and concepts that are making the news every day. From December 6th to 20th, discover the words that have left their mark on the year, with our 2021 Retrospective. From the "Pandora Papers" affair to the "#QuitMyJob" hashtag and of course the "Long Covid" condition, (re)discover these words that sum up 2021.

What is a QR code? Thanks for asking!

QR codes have likely never been used more than in the Covid age. They’ve become ubiquitous especially since the NHS started using them for its test and Trace app. These odd black-and-white grids may all look alike, but in fact every QR code is unique.

QR codes, or quick response codes to give them their full name, were first invented by Japanese engineer Masahiro Hara, working at Denso Wave, a subsidiary of Toyota. They were used in factories to track vehicles while they were being assembled, and to scan components.

Of course QR codes really took off in the 21st century, and in particular with the rise of the smartphone. 

What are QR codes used for? So how do QR codes actually work? Can we create a QR code? In under 3 minutes, we answer your questions!

To listen to the last episodes, you can click here:

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A podcast written and realised by Joseph Chance.

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