NFC卡模拟Android
Nexus S 设备 NXP PN544 NFC 控制器不仅支持基于 UICC 的 SE 的 SWP，还支持外部的 S2C（又名 NFC-WI），例如 微型 SD 卡 SE。有谁知道如何启用此功能以及这对 SD 卡意味着什么？这与 Google Nexus S 无关（没有 SD 卡插槽），但 NFC 版本的 Samsung Galaxy S II 已经配备了 SD 卡插槽，这将是一个问题。
我尝试过搜索，甚至S2C标准似乎也比较旧（我认为ECMA，2006）我没有任何相关材料。 支持S2C意味着什么？ NXP544有内置支持，但是手机呢？设备是否应该有一些硬件支持，例如插槽中和 SD 卡上的天线连接器，以便直接连接到 RF 接口？
非常感谢
问候，
STeN
稍后添加：
请访问 www.stackoverflow.com 上的以下链接：
Android 和 Symbian NFC 移动开发问题与解答（常见问题解答）
the Nexus S device NXP PN544 NFC controller supports not only SWP for UICC based SE, but also the S2C (aka NFC-WI) for the external, e.g.
micro SD card SE. Does anybody know how this can be enabled and what it means for the SD card? That is not relevant for the Google Nexus S (there is not SD card slot), but the NFC version of the Samsung Galaxy S II comes already with the SD card slot and here this will be a question.
I have tried to search for that and even the S2C standard seems to be relatively old (I think ECMA, 2006) I did not any related materials.
What it means supporting S2C? The NXP544 has the built-in support, but what about the phone? Should the device have some hardware support like, e.g. antenna connectors in the slot and on the SD card to be connected directly to the RF interface?
Thanks a lot
Regards,
STeN
ADDED LATER:
Please visit following link on www.stackoverflow.com as well:
Android and Symbian NFC mobile development questions and answers (FAQ)
如果你对这篇内容有疑问，欢迎到本站社区发帖提问 参与讨论，获取更多帮助，或者扫码二维码加入 Web 技术交流群。
绑定邮箱获取回复消息
由于您还没有绑定你的真实邮箱，如果其他用户或者作者回复了您的评论，将不能在第一时间通知您！
发布评论
评论（2）
我们都对 Android 中的 NFC 卡模拟有点迷失。谷歌和制造商对此有点过于保密。恕我直言，负责 API 的工程师正在玩烟幕游戏。他们声称对卡模拟缺乏兴趣以及开发人员可能面临的困难，但事实是他们希望保留暂时属于自己的金蛋母鸡。
没有人对 SGII SWP 功能一无所知。一切都是谣言。同样的情况也发生在 Nexus S 上，它面临着几个问题。显然，尽管应用程序可以访问嵌入式 SE，但它毫无价值，因为密钥预计会由 Google 保密。唯一的出路是希望 UICC 和 NFC 控制器之间能够通过 SWP 连接。理论上这是可能的，据说 Madlmayr 博士在上次 MWC 上演示了这一点。然而，我对他的成功有点怀疑，考虑到如果没有制造商的合作，关于 SNS 或 SGSII 上的基带固件支持、向 UICC 发送 APDU，似乎还不支持，通过 UICC 进行卡模拟是一场失败的战争。
We are all a little bit lost about NFC Card Emulation in Android. Google and manufacturers are being a little bit too secretive about it. Engineers in charge of the API are IMHO playing a smokescreen game. They claim about the lack of interest in card emulation and they difficulties developers could face, but the fact is that they want to keep the hen of the golden egss for themselves for the time being.
No one knows a thing about SGII SWP capabilities. All are rumors. The same happens with Nexus S, which faces several problems. Obviously though applications could access embedded SE it would be worthless, since keys are expected to be kept secret by Google. The only way to go is the hope in SWP connectivity between UICC and NFC controller. Theoretically it is possible, and it has supposedly demostrated by Dr. Madlmayr at last MWC. However I am a bit skeptical about his success taking into consideration that without the manufacturer's cooperation, regarding baseband firmware support on SNS or SGSII, sending APDUs to the UICC, that seems not yet supported, card emulation through UICC is a lost war.
PN544 只有一个 S2C (NFC-WI) 接口。如果手机具有嵌入式安全元件（即 SmartMX），则可以通过 S2C 连接。因此，在这种情况下，不可能同时连接基于微型 SD 的安全元件。
The PN544 has only one S2C (NFC-WI) interface. In case the phone has an embedded Secure Element, i.e. a SmartMX, this is connected via S2C. So there is in that case no possibility to connect also a micro-SD-based Secure Element.