How to Lock an NFC Tag

How to Lock an NFC Tag (Make Read-Only)

Locking a tag prevents it from being rewritten, which is useful for permanent installations. This is an option within the write() method. Warning: This action is irreversible.

async function writeAndLockNfcTag() {
  try {
    const writer = new NDEFReader();
    await writer.write(
      { records: [{ recordType: 'text', data: 'This is a permanent message.' }] },
      { overwrite: false } // Prevent writing to a tag that already has data
    );
    // After writing, you can make the tag permanently read-only.
    await writer.makeReadOnly();
    console.log('Tag written and locked successfully!');
  } catch (error) {
    console.error('Error locking tag:', error);
  }
}