How is the QR code change in PVC cards implemented?
2013-11-02 · Some membership cards have QR codes, which are quite common and the manufacturing process is relatively simple. You just need to spray the preset QR code with UV to achieve scanning. Today, we're going to talk about how to change the QR code.
How is the QR code change in PVC cards implemented?
Some membership cards have QR codes, which are quite common and the manufacturing process is relatively simple. You just need to spray the preset QR code with UV to achieve scanning. Today, we're going to talk about how to change the QR code.
We know that QR codes can be written to various different types of information, so to implement variable QR codes, we need to provide different content. Then, based on the different QR codes, we set them in advance on the machine, and then, in order, spray the set QR codes onto the machine.
A QR code is a barcode that extends a one-dimensional barcode into another dimension with readability, using black-and-white rectangular patterns to represent binary data. After scanning by the device, the information contained within can be obtained. The width of a one-dimensional barcode records data, while its length does not. The length and width of the 2D barcode record the data. 2D barcodes have "positioning points" and "fault tolerance mechanisms" that 1D barcodes do not have. The fault tolerance mechanism can accurately restore information on the barcode even if not all barcodes are identified or if the barcodes are damaged.
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