This has to match another encrypted key that is generated from a string of data scanned into the system from the optical bar-code printed in the passport.

这一密钥须同另一个密钥相匹配，后者是由印刷在护照上的条形码扫描入系统后生成的。

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The students can easily find their parcels according to a bar code distributed by the network system that the center operates.

根据由中心操作的网络系统分发的条形码，学生可以轻易地找到他们的包裹。

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Based on the effective hardware circumstance, the design divided the system into three subsystems: wireless LAN system, bar-code management system and WMS.

在提供了有效的硬件环境基础上，将信息管理系统划分为三大子系统：无线网络系统、条码管理系统、仓储管理系统。

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Joseph Woodland and Bernard Silver developed the very first bar code scanning system, in the late 1940s, after Woodland heard a food chain executive say he wished he had a way to capture product information at checkout.

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