Search found 18 matches

by Larson
Mon Feb 26, 2018 1:26 am
Forum: Solutions
Topic: About LoyaltyCard Applet?
Replies: 2
Views: 679

Re: About LoyaltyCard Applet?

In the process of learning the source code, if there is not very well understand some function, you can refer to the Java Card API Specification, or direct enter F12 jump to the definition of function.
by Larson
Mon Dec 19, 2016 4:31 am
Forum: Reader
Topic: SDK of readers
Replies: 1
Views: 817

Re: SDK of readers

Excellent. It's very useful to collect all the readers SDK in one topic. Thanks for your work.
by Larson
Thu Dec 03, 2015 2:01 am
Forum: Questions & Answers
Topic: Connect Virtual Card Reader failed?
Replies: 3
Views: 1204

Re: Connect Virtual Card Reader failed?

I learned it from here. It's a vedio about how to use Virtual Card Reader .
by Larson
Tue Dec 01, 2015 6:13 am
Forum: Other Tools
Topic: PassportReader
Replies: 3
Views: 2547

Re: PassportReader

Is this tool supports reading my real passport, please?
by Larson
Wed Nov 11, 2015 8:50 am
Forum: MuscleApplet
Topic: The MuscleApplet's source file is SRC?
Replies: 1
Views: 1294

The MuscleApplet's source file is SRC?

I checkout the MuscleApplet source code from "svn://svn.debian.org/muscleplugins/trunk/MCardApplet". And I find that, the source code file is SRC format , you can see the following picture: MCard.png I open the SRC files, and find it looks like java source code, is there a method can conve...
by Larson
Wed Nov 04, 2015 8:15 am
Forum: Questions & Answers
Topic: two questions about waitExtension
Replies: 1
Views: 868

Re: two questions about waitExtension

1. As far as I know, almost all the cards have implemented automatic timer mechanism. 2. You may use this method waitExtension() The related description in the API doc is as follows: public static void waitExtension() throws APDUException Note: 1-In T=0 protocol, a NULL procedure byte is sent to res...
by Larson
Tue Oct 20, 2015 5:46 am
Forum: Questions & Answers
Topic: How to let APDU buffer accept 200 bytes of data
Replies: 6
Views: 1832

Re: How to let APDU buffer accept 200 bytes of data

To read incoming data more than 128 bytes you may need to call APDU.receiveBytes() to accept the rest vytes of data.

Similarly, for sending data, APDU.sendBytes() might be needed to send longer data.
by Larson
Thu Oct 08, 2015 6:07 am
Forum: Questions & Answers
Topic: java card applet development :transmit a value directly or use a final variable
Replies: 1
Views: 699

Re: java card applet development :transmit a value directly or use a final variable

The second method is better than the first one. Moreover, if you want to change the value, you only need to change the value in definition command.
by Larson
Thu Oct 08, 2015 5:18 am
Forum: Questions & Answers
Topic: could somebody give me a intuitive description about APDU commands
Replies: 2
Views: 957

Re: could somebody give me a intuitive description about APDU commands

An application protocol data unit (APDU) is the communication unit between a smart card reader and a smart card. There are two categories of APDUs: command APDUs and response APDUs. 1.command APDU APDU_command.png The first four sections, CLA , INS , P1 and P2 are mandatory in all APDU commands and ...
by Larson
Wed Sep 23, 2015 6:07 am
Forum: Card Products
Topic: Java card low power consumption
Replies: 1
Views: 993

Java card low power consumption

Hey guys.
I am working on NFC technology referring to mobile phone and java card. And I need to get more details about java card low power consumption.
How does it work? What is the best low power contactless card ?
Thanks a bunch.
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