The passcode is an access protection for the fileee app. It is a four-digit code that you can choose for yourself.
You can activate the passcode, if you want to secure the access to your fileee app. By activating the passcode, you can save yourself the consequent logging in and out with the normal access data.
The passcode can be activated in the security settings. Furthermore you can also activate Touch ID, instead of using the passcode.