hce

问题 I have few questions when the reader initiates the transaction with NFC emulated payment application using HCE Does the reader send the PPSE command as with the regular contactless card infrastructure? Does the host controller respond to PPSE command with the list of AID's from the registered AIDs listed in the routing table? So after the reader selects the AID, the host controller directs to the right HCE service? Please correct my understanding on the above concept. 回答1: An EMV payment card

问题 I have few questions when the reader initiates the transaction with NFC emulated payment application using HCE Does the reader send the PPSE command as with the regular contactless card infrastructure? Does the host controller respond to PPSE command with the list of AID's from the registered AIDs listed in the routing table? So after the reader selects the AID, the host controller directs to the right HCE service? Please correct my understanding on the above concept. 回答1: An EMV payment card

问题 I have two apps on two Android devices, similar to CardEmulation and CardReader from the samples for NFC. I want to send data from the host card emulation app running on one Android device to the reader application running on the second Android device. This works when both apps are open in foreground. But if I close the reader application, I can no longer send data to it. Instead, when the two phones are held together, they activate Beam transmission. However, I would like to have the reader

问题 I am trying to build a communication between my Nexus4 HCE and Arduino PN532 Chip. on The Serial Monitor of Arduino,I could see some data transaction happening. But on ANdorid side, I get CET4T: Unsupported Class byte (0x60) CET4T: Unsupported Class byte (0xA0) BrcmNfcNfa﹕ UICC[0x0] is not activated Below is my apduservice.xml <host-apdu-service xmlns:android="http://schemas.android.com/apk/res/android" android:description="@string/servicedesc" android:apduServiceBanner="@drawable/ic_launcher

问题 I am trying to build a communication between my Nexus4 HCE and Arduino PN532 Chip. on The Serial Monitor of Arduino,I could see some data transaction happening. But on ANdorid side, I get CET4T: Unsupported Class byte (0x60) CET4T: Unsupported Class byte (0xA0) BrcmNfcNfa﹕ UICC[0x0] is not activated Below is my apduservice.xml <host-apdu-service xmlns:android="http://schemas.android.com/apk/res/android" android:description="@string/servicedesc" android:apduServiceBanner="@drawable/ic_launcher

问题 I have developed a system that can read NFC tag using a reader with PN532 chip. It works ok. I can read Mifare Classic and Mifare Ultralight tag. Now I'd like to use a Nexus Tablet with Android 4.4.2 to emulate a tag. I have no experience with android development but I think it is possible. I have set NFC communication in the Nexus Tablet but I think I have to download or write some application to emulate a Tag and an NDEF communication. What is the easiest way? 回答1: That depends on what

问题 I'm trying to do Host card emulation on an Android device using this example using ACR1281U NFC tag reader. This is the kind of application I want to make. As per the Android documentation and the example, it is required to register an AID in the Android project: <host-apdu-service xmlns:android="http://schemas.android.com/apk/res/android" android:description="@string/servicedesc" android:requireDeviceUnlock="false"> <aid-group android:description="@string/aiddescription" android:category=

问题 I'm trying to do Host card emulation on an Android device using this example using ACR1281U NFC tag reader. This is the kind of application I want to make. As per the Android documentation and the example, it is required to register an AID in the Android project: <host-apdu-service xmlns:android="http://schemas.android.com/apk/res/android" android:description="@string/servicedesc" android:requireDeviceUnlock="false"> <aid-group android:description="@string/aiddescription" android:category=

问题 Closed . This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this post. Closed 4 years ago . I would like to pass a string to an Activity easily. Something like callback would be needed because when the string has to be passed then the Activity has to do something. public class MyHostApduService extends HostApduService { @Override public byte[] processCommandApdu(byte[]

问题 Mifare Classic is the most used cards and I can't understand why HCE (Host-based Card Emulation) only supports ISO 14443-4, but not Mifare Classic type. Because NXP stops them from using their proprietary protocols and algorithms? Or because they didn’t implement Mifare Classic in Android OS level? Any comments will be very appreciated. 回答1: Short answer: Because Google decided to support only ISO/IEC 7816-4 over ISO-DEP (ISO/IEC 14443-4). Speculations on why they decided that way: First of