Who likes remembering long passwords? We certainly do not.
Your PIN is an easy 4-digit code to access your Vault. You can think of your PIN as a proxy to your Private Key. Your private key is essentially what allows you access to your Vault but instead of having to remember a long character password, you have your PIN!
You and only you have access to this information. It is important to note: we do not store PINs for the sake of protecting your privacy. Which is why it's important that you save the screenshot of the PIN when prompted because it will be needed when you need to recover your vault (eg. you lose or get a new phone!).
At Caden, we love making your life easier and the PIN does just that.