Only the customization options, "Continue" and "Restore default" buttons are active in this state. All other buttons are disabled. Only the "Cancel" button is active in the overlayer state. All other buttons are disabled.

Pros: thanks to this feature, the occasional user can be easily reminded to pick the right cup.

Cons: the user needs 1 more step to get his drink compared to the main concept.

An optional feature can be enabled in the machine settings: Cup Reminder. When enabled, it introduces an "overlayer" to remind the user to pick the right cup size before the drink is made. It can easily be disabled for professional users.