apdu

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="other"> <aid-filter android:name="F0010203040506"/> <aid-filter android:name="F0394148148100"/> </aid

Is it possible for an Android application to send a previously stored RFID card ID to a NFC reader? The aim would be to use an Android device to enable access to a room instead of a physical RFID card. Having read a lot of other threads about NFC/RFID & card-emulation, I came to the conclusion it was not available for now in Android but I'm still kinda confused if it apply to this particular case. Can't the application simply send the card ID within a NDEF message or an APDU command or I'm just completely dreaming? Well, strictly speaking. For what you want to do you don't need card emulation.

I'm trying to send APDU commands to the card reader itself instead of the Smart Card. The test command I'm using turns the RF field on and off. This commands sends over SCardTransmit if I first connected to a smart card. But as soon as the RF field is off, the card disconnects and I cant send another APDU to turn the field on. Basically is there any way to send APDU's over pc/sc without a card present. I want to configure certain parts of the reader before reading a card. Thanks in advance. -----Edit----- As FPGA Warrior mentioned I need to use SCardControl to send APDU commands to the card

As you know, we prove to the card that we are the authentic user, via INITIAL UPDATE and EXTERNAL AUTHENTICATION commands, as follow : < 80 50 00 00 08 | Host Challenge > ... < 84 82 03 00 10 | Host Cryptogram | MAK > ... I want to know, what is the differece between this authentication process and the VERIFYING process with CLA 20 P1 P2 Lc Data Le APDU? All cards support both? or each card use one of this mechanism? Update: As you see, I upload and install my applet on the card successfully , [Without using Verification]! So why I need verificatin : C:\Users\ghasemi\Desktop\gpj-20120310>gpj

I have a fresh card with the below code as its ATR. 3B 68 00 00 00 73 C8 40 12 00 90 00 I searched this ATR in google and finally I know this is a "Brazilian e-CPF card". the question is how I can use this card? I mean what APDUs for example it supports? is there any datasheet for it? is it a javacard? [if yes] how I can upload a .cap file in it? is there any default key for it? and a lot of this kind of questions. the mainly question is that : what kind of data I can gain from an ATR? btw I use ACR38 SmartCard reader. and I create a .cap javacard program in Eclipse. Next Question: I use GPJ