How will we handle those read-only operations referenced by other tags under the same? We have three options?

我们如何处理那些同一下的其他标签引用的只读操作？

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OCR technology, which uses a light sensitive device, is used to read codes on merchandise tags, product labels, credit card receipts, and other documents.

光学字符识别技术，它利用光敏感器件，是用来读码，商品标签，产品标签，信用卡收据及其他文件。

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One form of the technology can read 30 notes a second, although the tags have to be separated from each other by a distance of at least 2cm to reduce interference.

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