Recent questions tagged NFC

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nfc - NFCTagReaderSession has timeout of 20 seconds. How to increase it?

I am trying to send APDU commands to NFC card that contains ISO7816 Tag I will open session: readerSession ... NFCTagReaderSession. But no luck. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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nfc - Connection error when reading Android NfcV tags

I have an Android app that reads NFC tags. Everything works fine on the LG Nexus 4 but on Samsung Galaxy S5 I only ... (IOException e) { } } } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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364 views

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nfc - Strange character on Android NDEF record payload

I just started coding with Android NFC, i've successfully read and write NDEF data into mifare classic tag. The problem ... (); } } } } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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662 views

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nfc - Mifare 1K authentication keys

I have a MIFARE 1K tag. Some blocks can be written/read using authentication key A, while other block can be ... B? What's the difference? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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nfc - Android HCE: are there rules for AID?

I'm trying to use an ACR122 NFC reader to select an application emulated in one Nexus 5 using Android Host ... I doing something really wrong? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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779 views

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nfc - ACR122 - Android / How to extract the UID

I try to integrate an ACR122 to my android app. I'm using the ANDROID Library (http://www.acs.com.hk/ ... example of this type of integration? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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460 views

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nfc - Do I have to know what the AID of a card is for card emulation with Android HCE?

I merely want to emulate a transit card with an Android application using HCE. I'm confused about the AID of the card ... do I know what it is? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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967 views

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nfc - NDEF Message with HCE Android

I wanna emulate a host card with the HCE feature from Android. For that I extend the service class HostApduService ... . Can anybody help me? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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339 views

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nfc - Checksum Error while provisioning Android Lollipop

I get the message Couldn't use the admin app due to a checksum error. Contact your IT department ... want to build DeviceOwnerCheck yourself. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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403 views

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nfc - List of devices support HCE?

As more and more devices have KitKat, I'm trying to compile a list of devices support HCE. Does anyone have the ... Galaxy Note 3 Nexus 7 (2012) See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.1k views

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nfc - Getting Parser error on request for GPO command for EMV card

I have some issues with the GET PROCESSING OPTIONS (GPO) command for a VISA card. Following is my response ... parser error as response: 6A80 See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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893 views

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nfc - Why doesn't Android HCE support Mifare Classic type?

Mifare Classic is the most used cards and I can't understand why HCE (Host-based Card Emulation) only ... comments will be very appreciated. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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538 views

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nfc - How to card emulate with ACR122U-A9

I have a ACR122U-A9, I want to card emulate with it. I ask who has done this point? Can you give me ... the LED always blinks until phone out. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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