What is a Micro QR code? (with pictures)

Micro QR code is a smaller version of the QR code standard for applications with less ability to handle large scans. There are different forms of Micro QR codes as well. The highest of these can hold 35 numeric characters.

Be aware that not all devices can scan a Micro QR code. For example, a dedicated hand held barcode reader can read a Micro QR code but most mobile phones can not.

Standard QR code is the QR code standard for applications that possess the ability to handle large scans. A standard QR code can contain up to 7089 characters, though not all QR readers can accept that much data.

http://www.neodynamic.com/barcodes/Micro-QR-Code.aspx