title: Two RFID readers show different identifiers
body: <p>I have used two RFID readers (different vendors), which provide two different identifiers for the very same RFID tag:</p>
  
  <ul>
  <li>Reader A shows <code>5BFA0746</code> (decimal <code>1543112518</code>)</li>
  <li>Reader B shows <code>4607FA5B</code> (decimal <code>1174927963</code>)</li>
  </ul>
  
  <p>Can you explain why?
  There are no similarities with <a href="https://stackoverflow.com/a/27483512/2770263">the last bytes</a> nor <a href="https://stackoverflow.com/a/19933827/2770263">prefixes</a>.</p>