You can order a guest/private charge key directly in the Northe account. Follow the instructions below to order a guest key.
1. Open the app and go to 'Settings'
2. Select the Private/Guest profile in the drop-down menu.
3. Go to 'Charge Keys'
4. Click 'Order charge key' and go through the order flow.
Once you've received your charge key, make sure to register it to the private/guest profile.