Adding a PIN to your wallet is currently available with android phones but not with Apple iOS phones.

Android

1. Open App
2. Go to ‘Settings’ on your home screen
3. Select ‘Set PIN’
4. Enter your nominated PIN
5. Re-enter your nominated PIN
6. Click ‘Next’

Your phone is now protected with a PIN, which will be requested every time you open the App.

iOS:

Currently you can’t add a PIN to your wallet, but we are working on this feature.
Additionally, in the future you will be able to unlock your digi.cash App with Touch-ID.