由网友(后来少了你)分享简介：要更具体，我想实现一个Android应用程序，这迫使手机用作RFID​​标签。这个标签被放在门的左右扫描器（因此>4英寸约束）标识的人，他的行踪阅读。To be more specific, I'm trying to implement an Android application, which forces th...

要更具体，我想实现一个Android应用程序，这迫使手机用作RFID​​标签。这个标签被放在门的左右扫描器（因此>4英寸约束）标识的人，他的行踪阅读。

To be more specific, I'm trying to implement an Android application, which forces the phone to operate as an RFID tag. This tag is read by scanners placed around doors (thus the > 4 inches constraint) identifying the person and his whereabouts.

这款手机将作为一个智能标记，从而提供了进一步的使用案例。

The phone will act as a smart tag, thus providing further use cases.

感谢你。

推荐答案

NFC特别限制在4英寸的距离。由于近场通信被视为两个伙伴它不旨在用作诸如RFID一个跟踪装置用于存储例如之间的认可的通信。

NFC is especially limited to the 4 inch distance. Because the Near Field Communication is seen as a "approved communication" between the two partners it is not designed to be used as a tracing device like RFID is used in stores for example.

因此​​，可以使用NFC作为一个RFID设备的距离将仍然在电话被限制在4英寸由硬件

Thus you can use NFC as a RFID device the distance would still be limited to the 4 inches by the hardware in the phones.

//修改

你也可以使用新的蓝牙4.0协议。通讯伙伴之间的建立时间是一样快，NFC（小于0.1S）（与蓝牙2.1，几乎达到6秒）

you could instead use the new Bluetooth 4.0 Protocol. The Setup-Time between Communication Partners is as fast as NFC (<0.1s) (in contrast to Bluetooth 2.1 with almost up to 6s)