Lock

• Click Passcode to set 4-digit lock
• Click on the appropriate passcode type to enter the passcode
• Click to turn on Face ID / Fingerprint Lock

Require after...

After leaving Card Diary, how long until a PIN code is required for re-opening?.

This setting allows you not enter your passcode again while you switch to other apps in a short period time. Avoiding the tedious task of constantly entering your password.