Many of you will have seen these strange looking square patterns popping up in all sorts of places. On product labels, signs, posters, business card and goodness knows where else everything seems to be getting them. Many of you will also know that they can be scanned in some way to reveal what is behind them.
QR stands for Quick Response code and the square pattern is a type of 3D bar code.
With most new smartphones you can simply point the camera at one of these QR code and it will pop up a web site address up on the screen, click on the address and the web page will open.
If your camera app does not do this download a QR code app from the App store or Play store most are free.
Here is one for you to try.
The link will take you to www.lfn.org.uk
A huge amount of information can be stored in these small squares, I will not bore you with the layout and structure on the information but for anyone that is interested you can read the Wikipedia article here. https://en.wikipedia.org/wiki/QR_code
You can easily make your own free QR code online visit https://www.qr-code-generator.com/ and type the information you want it to contain and then download your QR code.
After QR codes comes RFID tags, watch out for the next article coming soon.