Is it possible, with the current android API, to communicate using peer-to-peer NFC with a desktop reader/writer using libnfc?
Thanks, André On 4 Abr, 15:15, Nick Pelly <[email protected]> wrote: > We're not in a hurry to add public API's for Card Emulation. It is a > developers nightmare because most NFC hardware will only support one type of > card emulation technology. And there are at least 4 very common types > (Felica, Mifare Classic, Mifare Desire, ISO-DEP). So a developer would need > to understand all these types and the inter-operability issues, and choose > which set of phones to write their application for. > > Not to mention dealing with multiple apps that all want to do card > emulation. Take Mifare as an example, how would the user decide which > application gets to control the Mifare Application Directory? Yes it is > possible to construct a combination of API's and system UI that lets the > user choose which application gets to do card emulation. But we have to > introduce API complexity and, cognitive overhead for the user. > > As a third party developer, I highly encourage you to invest in peer-to-peer > NFC. This can easily handle multiple applications, and is guaranteed to work > across all Android phones. > > Cheers, > Nick > > > > On Thu, Mar 31, 2011 at 1:36 PM, nadam <[email protected]> wrote: > > It would be nice to get a hint on when card emulation will be added as > > an official feature of the SDK. It's already mentioned in the source > > code (NfcAdapter.java) but hidden with @hide. > > > /** > > * Card Emulation mode Enables the manager to act as an NFC tag. > > Provided > > * that a Secure Element (an UICC for instance) is connected to > > the NFC > > * controller through its SWP interface, it can be exposed to the > > outside > > * NFC world and be addressed by external readers the same way > > they would > > * with a tag. > > * <p> > > * Which Secure Element is exposed is implementation-dependent. > > * > > * @hide > > */ > > private static final int DISCOVERY_MODE_CARD_EMULATION = 2; > > > It seems to be possible to enable this somehow (http://www.youtube.com/ > > watch?v=28TwCpx4Dng) but I don't know if it requires Java reflection, > > NDK programming or a custom Android build. > > > On 31 mar, 04:39, Dianne Hackborn <[email protected]> wrote: > > > The platform so far supports what is in the SDK. It doesn't matter what > > a > > > particular piece of hardware supports. > > > > It is enough to be "useful in practice." It may not be enough for what > > > *you* want to do, and we understand that it does not do everything for > > > everyone at this point, but this is what is there so far. > > > > On Wed, Mar 30, 2011 at 3:03 AM, JMC114 <[email protected]> wrote: > > > > Greetings, > > > > > After sifting through documentation and building NFC test applications > > > > on a Nexus S, I've come to the conclusion the Android SDK still lacks > > > > the functionality that NFC applications truly need in order to really > > > > be useful in practice. > > > > > What's possible now: > > > > - Reading and writing tags. > > > > - P2P NDEF communication. > > > > > What's missing: > > > > - Card emulation > > > > - P2P NDEF support on terminals/readers (which I'm given to understand > > > > is known as com.android.npp? NDEF Push Protocol. Can't find any > > > > documentation on that anywhere..) which - I believe - is (still) > > > > needed for P2P communication with regular desktop readers > > > > > As far as I can tell, the NFC controller chip (PN544 > > > >http://www.nxp.com/acrobat_download2/literature/9397/75016890.pdf) in > > > > the Nexus S supports all NFC functionality, the android SDK does not. > > > > > Card emulation or proper documentation on how to initiate P2P > > > > communication with a regular (desktop) (nfc) reader is very much a > > > > requirement to unleash NFC's true potential, which is mobile payment. > > > > > It seems impossibly hard to find any information on whether or not > > > > this - in my opinion vital - functionality is due to be implemented. > > > > > Does anyone have any information, thoughts, opinions, anything on this > > > > subject? I'm really wondering what to expect from Android and NFC, > > > > because frankly, I'm only half impressed so far. > > > > > Thanks > > > > > -- > > > > You received this message because you are subscribed to the Google > > > > Groups "Android Developers" group. > > > > To post to this group, send email to > > [email protected] > > > > To unsubscribe from this group, send email to > > > > [email protected] > > > > For more options, visit this group at > > > >http://groups.google.com/group/android-developers?hl=en > > > > -- > > > Dianne Hackborn > > > Android framework engineer > > > [email protected] > > > > Note: please don't send private questions to me, as I don't have time to > > > provide private support, and so won't reply to such e-mails. All such > > > questions should be posted on public forums, where I and others can see > > and > > > answer them. > > > -- > > You received this message because you are subscribed to the Google > > Groups "Android Developers" group. > > To post to this group, send email to [email protected] > > To unsubscribe from this group, send email to > > [email protected] > > For more options, visit this group at > >http://groups.google.com/group/android-developers?hl=en -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
