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Questions tagged [contactless-smartcard]

A contactless smartcard is a smartcard with a contactless communication interface in addition to or instead of a contact smartcard interface. Contactless smartcards are often used for ID documents and contactless payment cards (e.g. employee ID badges, electronic passports and ID cards and contactless credit/debit cards).

A contactless smartcard is a with a contactless communication interface in addition to or instead of a contact smartcard interface. Usually, the term "contactless smartcard" refers to a contactless transponder that adheres to the smartcard communication protocol standardized in ISO/IEC 7816-4 and that has a radio frequency interface according to ISO/IEC 14443. However, chip manufacturers sometimes also use the term "contactless smartcard" for contactless memory cards that have additional cryptographic and/or access control logic.

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Format/Read/Write NDEF Mifare 1K Card using libnfc

I am new to NFC and I want to learn more about this, so I bought a PN532 NFC shield from Adafruit and a couple of Mifare 1K Card. Now I have installed successfully Libnfc on Windows 8 and it works fine, I can use nfc-list. I have tried to install…
wald
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AID for HID readers

If I want my android phone to emulate a physical card to the following reader: http://www.hidglobal.com/products/readers/iclass/rw100 Which AID would I have to use? I was following this…
Rok
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how to differentiate between contactless card and smart phone when performing a payment via NFC?

I'm working on a university project, where we need to customize a POS terminal when a transaction is successfully completed and approved via NFC. When processing a transaction using a smart phone, the POS device will be customized to perform an…
user3730197
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Get Infos (e.g. amount, currency..) from contactless reader

I have managed to read a transaction event from the contactless reader, using
TootsieRockNRoll
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Making sense of the Smartcard GetAnswerToResetAsync method

I'm trying to extract the ATR from a smartcard using the new Windows.Devices.SmartCards namespace in Windows Phone 8.1 (I'm using Silverlight). I'm calling the method GetAnswerToResetAsync and this responds with a COM object, which converts to a 14…
Nick Wright
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Mifare card memory space?

What is the net memory space remaining in a MIFARE Classic 1K card considering that keys and access bits take 16 bytes per sector, and the unique id (UID) and manufacturer data takes 16 bytes for each card?
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Can't authenticate NFC tag having 7 byte UID ACR122U

I have got two type of Mifare Classic tags. One have UID of 4 byte and other one have 7 byte. I am trying to read the block of both. I am successful in reading the block of the tag having 4 byte UID but failed to authenticate in case of 7 byte UID.…
user2578909
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Interaction between android application and ACR122U in card emulation

I have my ACR122U in card emulation mode and an Android application which has to start when the emulated tag is detected and send a message, for example: "Hello". When emulate the tag and scan it with my phone it successfully opens the application…
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Access MIFARE DESFire Card

How can I access a MIFARE DESFire card using an Android phone as NFC reader? I am planning to develop an android application (for payment) on Android phone. The DESFire operations (Authentication, Read and Write) that I want to perform using the…
Donn
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Changing key in Mifare 4K Card

Can anyone please tell me how to change a key in a Mifare 4K classic card. What I tried was + access bits + 0xAA 0xAA 0xAA 0xAA 0xAA 0xAA 0X78 0x77 0x88 0x69 0xFF 0xFF 0xFF 0xFF 0xFF 0xFF But the key refuses to change. The default…
vikky
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how to organize large data file on a NFC type 4 tag emulation

I'm working on an application where I store data on a 4Mbit dataflash and read it out with a smartphone via NFC. To do this I use a NFC frontent (AS3953) and a microcontroller to emulate a Type 4 tag. It would be convenient to split the data into…
Andreas
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Host-based Card Emulation, any guidance please?

I'm new to this field, I got a Nexus S ( CyanogenMod11 = Android Kitkat 4.4.2) And I need to use HCE (Host-Based Card Emulation) mode in order to emulate a contactless card. Any guidance on the steps and the tips I need to follow in order to…
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MIFARE Classic: How to find to good Access Byte value

My aim is to have only KEY A authentification and disable Key B (used space to store data). I read these…
user3655305
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Google wallet status is 'Unknown' after successfull 'Compute Crytographic Checksum' via Android isoDep.transceive

I'm still trying to emulate a point of sale (POS) system and complete a transaction with Google wallet. I've gotten further with great answers on stack overflow. See Android isoDep.transceive on Generate AC command always returns 6D00…
Larry Meyer
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NFC HID MIFARE card reading

I have a HID MIFARE DESFire card i'm trying to read through android. The card is ISO 14443 as far as I'm aware, but nothing I do seems to read it. I can read what I assume is a UID. The card looks as if it is not formatted, but i'm not sure if…
MissCoder87
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