条形码与二维码的准确性？
我想开发一个用于检查和计费的超市应用程序。
我应该使用条形码还是二维码？哪个会提供更好的准确性？
I want to develop a supermarket application for checking and billing.
Should I use barcodes or qrcodes? Which will give better accuracy?
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这里最大的区别是线性条形码（例如 Code 3 of 9、UPC、EAN 等）和二维符号系统（例如 QRCode、DataMatrix 等）以非常不同的方式存储数据。线性条形码可以用简单的激光扫描仪读取，而大多数二维符号需要成像仪才能读取。一般来说，成像仪也可以读取线性条形码，但也比激光扫描仪更昂贵。
您需要考虑您的客户是否可能已经只拥有线性扫描仪，或者他们是否愿意为成像仪支付额外费用，以获得可以在二维符号体系中编码的额外数据的好处。
The biggest difference here is that a linear barcode (e.g. Code 3 of 9, UPC, EAN, etc.) and a 2-dimensional symbology (e.g. QRCode, DataMatrix, etc.) store data in very different ways. A linear barcode can be read with a simple laser scanner, while most 2-D symbologies require an imager in order to be read. In general, imagers can also read linear barcodes, but are also more expensive than laser scanners.
You will want to consider whether your customers may already have linear scanners only, or whether they would be willing to pay the premium for an imager in order to get the benefit of the extra data that can be encoded in the 2-D symbologies.
两者都是准确的，问题是您需要存储多少数据。 QR 的容量比 3of9 条形码大得多。
Both will be accurate, the question is how much data do you need to store. QR has much more capacity than something like 3of9 barcode.