title: Authentication failure for Mifare 1K NFC tag using ACR122U NFC reader
body: <p>I always get the failure result when using ACR122U tool to authenticate Mifare 1K NFC tag, but I can use Android phone to read/write this tag.</p>
  
  <pre><code>ACR122U Load Authentication Keys
  &lt; FF 82 00 00 06 FF FF FF FF FF FF 
  &gt; 90 00 
  &lt; Key Structure: 00    &lt; Key Number: 00
  &lt; Key: FF FF FF FF FF FF
  Load Authentication Keys Success
  
  ACR122U Authentication
  &lt; FF 86 00 00 05 01 00 00 60 00 
  &gt; 63 00 
  Operation failed
  </code></pre>