QR Code is short for Quick Response Code because they can be read quickly by a mobile device. They originated in Japan where they are widely used in advertising.
You will already have seen them appearing in the UK on magazine adverts, in newspapers and even on advertising hoardings.
First open an existing post/page of your choice , or create a new post. Then upload all the images you would like to see in the gallery on this page/post. To do this, click the “Add an Image” icon to upload a selection of gallery images.