Based on the information redundancy technology, an alternative method to guarantee the integrity of bar code data is given.

基于信息冗余技术，提出了一种保证条形码数据可靠性的方法。

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By putting a bar code data field in a label or envelope publication, you indicate where you want information from the bar code column to appear in the printed copies.

通过将条码数据域放在标签或信封出版物中，您可以指定希望条码列中的信息在打印出的副本上显示的位置。

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Unlike previous ones, the e-passports contain biometric data embedded in a radio-frequency identification (RFID) chip, along with the usual mugshot and optical bar-code.

跟上一代不同，电子护照除了包含照片及光感条码之外，还记有生物体征数据，植在无线电频率识别(RFID)芯片上。

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It is also tricky to capture the data in the field and stick the bar-code labels on the produce as it is picked and packed.

ECONOMIST: Tech.view

But the black matrix bar code symbols have become a harbor for malicious code writers who devise ways to steal personal data.

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