title: Creating a PIN code with secure text entry using a formatted text field with swift
body: <p>How would one go about creating a secure text entry text field which stores the text field (password) as a secure text field but places it in a label like the one below?</p>
  
  <p><img src="https://i.stack.imgur.com/slEFQ.png" alt="Confirm Pin screenshot"></p>
  
  <p>My approach is to use <a href="https://github.com/tkach/PinCodeTextField" rel="nofollow noreferrer">https://github.com/tkach/PinCodeTextField</a>
  However, when I import the Cocoapods my view controller cannot reference the delegate "PinCodeTextFieldDelegate". The error: "Use of undeclared type 'PinCodeTextFieldDelegate'" is displayed.</p>