Decoding QR Codes in the cloud
QR4 has launched a public cloud based service to read and decode the contents of QR codes.
This decoder operates and functions like your average smartphone would. It accepts uploaded image files of QR barcodes, and you can also point it to images online via URL's.
If the decoder does not read your QR code image, then chances are other smartphone readers may also have problems reading and decoding it.
TIP: Make sure the QR code fills more than 50% of the image area else the decoder will ignore it. Also make sure the image has good focus.
Try the cloud based QR code reader service yourself and find out what is inside those QR codes and how they work.