QR code (abbreviated from Quick Response Code) is the trademark for a type of matrix barcode (or two-dimensional barcode) first designed for the automotive industry in Japan; a barcode is an optically machine-readable label that is attached to an item and that records information related to that item: The information encoded by a QR code may be made up of four standardized types ("modes") of data (numeric, alphanumeric, byte / binary, Kanji) or, through supported extensions, virtually any type of data.
As for the better, i'd like to recommend this barcode reader, it can empower users with the ability
to include an image viewer and pre-processing capabilities such as deskew, despeckle, and annotations.
I'm studying about this recently.
I hope we can have some communication later.