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NFC UTIL a java RFID writer/reader for the MIFARE Ultralight C

written in Java 1.6

Desktop usage:

1.) Reading a Tag:

NFCReader reader = new NFCReader(); Properties tagContent=reader.read(); String tagID=tagContent.get(NFCReader.PROPERTY_TYPE_TAG_IDENTITY); String tagValue=tagContent.get(NFCReader.PROPERTY_TYPE_TAG_VALUE);

... tagID contains the unique ID of the MIFARE-Ultralight C chip ... tagValue contains the userData of the MIFARE-Ultralight C chip

2.) Writing on the Tag:

NFCWriter writer = new NFCWriter(); writer.write("Hello World");

3.) Make a Tag Writeprotected (Attention this is a onewayticket !!!)

NFCWriter writer = new NFCWriter(); writer.lockTag();

WEB usage ... (see the example in the folder appletDemo) :

1. before building the project add your keystore do the folder src/keystore

2. uncomment to jarsigner plugin in pom.xml

3. build your nfcutil.jar

4. add the nfcUtil.jar to the webcontent

5. add an applet to your site and define the callback method

<applet mayscript="true" code = 'info/margreiter/nfc/applet/NFCReaderApplet.class'

archive = 'nfcUtil.jar' name="rfid" height="50" width="300">

<param name="callback" value="processRFID">

</applet>

6.) create a callback method in the site

<script type="text/javascript">

function processRFID(result){

var obj = eval("(" + result + ')');

var id=obj.id;

var content=obj.content;

... do something with the contant ...

}

</script>