title: Data representation on NFC tag when writing with Android
body: <p>MIFARE Classic 1K memory cards have multiple sectors to store data, so I want to know how the data is allocated and stored into the sectors of MIFARE Classic 1k when writing NDEF data to the tag in Android unsing the following command:</p>
  
  <pre><code>Ndef ndef = Ndef.get(tag);
  ndef.writeNdefMessage(message);
  </code></pre>