title: Mifare Ultralight data access
body: <p>I am using NFC TagInfo to read a MIFARE Ultralight tag. Some pages have the following access rights:</p>
  
  <blockquote>
    <p><strong>readable writable locked</strong>
    and
    <strong>readable writable un-locked</strong></p>
  </blockquote>
  
  <p>What is the difference between them? If they are readable writable what is locked/unlocked about them?</p>