Hi, Thanks again for the nice discussion. I have few more comments and points for last clarification.
---------------------------- >As for the > moment I don't know of any SD card that supports NFC-WI. I understand that there are no NFC-WI enabled microSD cards on the market. Anyway I think the SD Card Association has some standards, which specify two additional 13.56Mhz RF antenna pins complaint with ISO 10373-6 (check here http://wenku.baidu.com/view/2799ef0f4a7302768e993975.html). Do you think this can be possibly used for S2C? ---------------------------- > the two NFC-WI > pins of the SD card would need to be connected to the two NFC-WI pins of > the PN544 If such microSD will be available it will need compatible microSD card slot. I understand that the legacy SD interface remains untouched (i.e. SD card with antenna slot can be used as a flash storage in legacy SD card slot), to interconnect two new connectors will be added to the SD card slot. Do you have some lnks, documents, specification, simply anything related to the S2C interface? ---------------------------- > I > don't see why any manufacturer would integrate this into a device. You said two interesting facts: - It is not expected to have more than one secure element per device. Why? - Having the microSD card has advantages, like it can be shared without SIM card change (e.g. house key), application developers do not need to go to the mobile operators, banks can issue microSD card without the mobile operators, etc. every country has more then one MNO, so separate agreement might be necessary... MNO will be very strict regarding use of proprietary systems/applications... There are couple of reasons for that. Of course everything is about money... ---------------------------- > Regarding a (teoretical) NFC-WI-enabled SD card: As NFC-WI is not really > a bus but an interface between two endpoints, it would be difficult to > have two secure elements connected to it. Possibly this could be done > with some external multiplexing circuit. Do you know if SmartMX uses S2C to connect with PN544 – due to the PN544 data sheet it is the only way how it can be connected, but there can be something proprietary... ---------------------------- > (trough some library like SEEK) The most important – you have mentioned SEEK – can this be used for accessing the secure element on the SD card I have mentioned (e.g. G&D APDU file I/O based interface). Do you think I can somehow use the RF antenna of the phone to get the information from e.g. POS terminal and forward those information using SEEK to the secure element on this SD card, then pickup the answer and send it back over the NFC controller and antenna to the POS terminal? Note that POS terminal expects that the phone is in the card emulation mode... I can imagine application running in the NFC p2p mode which proxies the communication between POS and secure element, but since the phone must be in card emulation mode, the p2p solution will not work... Do you see any possible solution how to interconnect the secure element on the SD card with the phone NFC HW? Thanks a lot for your patient and answers BR Petr -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
