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Beyond the Bar Code

机译:超越条形码

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摘要

That old grocerystore standby, the bar code on every mop, magazine, and Mars bar, celebrated its 30th birthday this year. Considering the drastic advances in computing since 1974, it should come as no surprise that there's a new product-tracking technology breathing down the bar code's neck. It's called the Electronic Product Code, and at its core, it's just a long number like the one embedded in a bar code. But whereas bar codes can only be read by laser scanners at close range, EPCs are stored in radio frequency ID (RFID) chips affixed to product packages, which radio-wave scanners can read at a distance of up to several meters. While all bags of Oreos bear the same bar code, Electronic Product Codes have so many digits that each bag could receive its own—as could up to a billion billion other items.
机译:这个旧的杂货店待命室,每把拖把,杂志和火星条上的条形码都庆祝了今年的30岁生日。考虑到自1974年以来计算机技术的飞速发展,因此,出现了一种新的产品跟踪技术席卷条形码的事实也就不足为奇了。它被称为电子产品代码,它的核心只是一个长数字,就像嵌入在条形码中的数字一样。但是,条形码只能由近距离的激光扫描仪读取,而EPC则存储在固定在产品包装上的射频ID(RFID)芯片中,无线电波扫描仪最多可以读取几米的距离。尽管所有Oreos袋子都带有相同的条形码,但电子产品代码的位数如此之多,以至于每个袋子都可以接收到自己的袋子,以及多达十亿个其他物品。

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