nfcd should return the origin of the HCI EVENT Transaction Message, per GSMA 6.0 specs: ----------------------------- 7.4 UI Application triggering requirements TS26_NFC_REQ_129 A Transaction Event (EVT_Transaction) SHALL be triggered based on the following information: Action com.gsma.services.nfc.action.TRANSACTION_EVENT Mime type - URI nfc://secure:0/<SEName>/<AID> - SEName reflects the originating SE It must be compliant with SIMAlliance Open Mobile APIs - AID reflects the originating UICC applet identifier ----------------------------- The URI should be returned, and includes the secure element name and path along with the AID (Application ID). Either Nfcd or the NFC Service should construct that URL, or simply pass all the information up through the stack separately to reconstruct it.