Card emulation from the host device is not a feature of the PN544 NFC controller, although some claim that they have managed to get it working. The Nexus S has a secure element that could be used for that (used in Google Wallet). Card emulation can be done either by the secure element connected to the NFC controller or by the host device (=Android device in this case).The NFC controller in the Nexus S (and Galaxy Nexus, Nexus 7 and quite a few other Android devices) is the PN544.Some facts that may be of help in your quest: I see that this is possible since we have products from access control companies offering mobile applications via which one can open doors e.g. Has someone tried emulating card via this method? To do so, i searched that we need to patch nexus s with cynagenmod.

If this is true, can i write/read apdu commands to this emulated card? (Probably if i use a modded rom like cyanogenmod)Ģ) Can i write a android application that reads apdu commands sent from the reader and generate appropriate responses (if not fully, then upto some extent only). I have a ACR122U reader and i've tested that NFC P2P mode works fine with the Nexus-S that i have.ġ) I came across a site that said that nexus s's NFC controller (pn532) can emulate a mifare 4k card. The option i can see is doing it via software. I need to emulate a card (mifare or desfire etc). Also, we cannot write custom applications to secure element embedded in nfc controllers due to keys managed by google/samsung. I read that stock version of android does not support API's for card emulation. After reading a lot of questions, i decided to post this one.

Mifare card emulation on android