But whereas RFID systems transmit little more than an electronic bar code, NFC offers two-way communication and lets devices interact in more complex ways.

不过RFID系统只能传输很少的电子条形码，而NFC可以提供双向传输及设备间更复杂的沟通方式。

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Earlier this year Intel, the world's biggest chipmaker, said it had developed a new chip especially for UHF readers, which should help to bring the cost of RFID systems down even further.

今年早些时候，全球最大的芯片制造商英特尔公司声称，其制造出专为超高频读取器制造了一款新的芯片，这款芯片可以帮助进一步的降低RFID系统的成本。

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This is similar to the radio frequency identification (RFID) systems often seen in transit systems such as San Francisco's Clipper swipe card or London's Oyster scheme.

这个系统类似于旧金山路路通卡及伦敦Oyster公交卡采用的射频识别（RFID）系统。

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Those same RFID systems enable retailers to monitor activity and re-order without any human interaction.

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Future revenue potential will come from selling services that help business customers set up RFID systems, according to Lanza.

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The researchers urged companies working on RFID systems to start thinking seriously about security measures to protect against future threats.

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