This rectangular-shaped QR code is designed to be used on narrow spaces, with an aspect ratio similar to that of a traditional 1D bar code ... by separating the color image into its RGB components ...

Here are some of the best Barcode scanners on Amazon. Here’s a handheld scanner built for 1D barcodes. The Handheld Wired 1D Barcode Scanner can effectively scan 1D barcodes in bright sunlight ...