You're probably used to scanning QR codes with your smartphone to access email addresses, phone numbers, and website links.

Using Code Scanner on Your iPhone . Code Scanner is an easy way to scan QR codes on another screen, form, or physical sign. This is a built-in dedicated code scanner that you can ...

How do you fix it? Of course ... and it manages to thin out one of the vertical lines in the barcode. Apparently, [Benji’s] scanner is more tolerant of this than the customer scanner.

A scheme in Oxford called Greater Change wants to provide homeless people with barcodes, so members of the public can give them money using smartphones. A smartphone film by Dougal Shaw ...