Wang Ba was right. The electronic menu of iPad ordering system has a strong advantage over the traditional paper menu. The advantage is that once the traditional paper menu is revised, the chef is changed, or new dishes are added, the store needs to reprint the new paper menu. In this case, the electronic menu of the iPad ordering system can save the store a lot of cost and time for printing paper menus. In addition, because the electronic menu of "Gourmet Companion" on iPad has self-service ordering function, customers can order their own food when the hotel business is busy or the number of waiters is small. The electronic menu of the iPad ordering system is a one-time investment relative to the waiter's salary for one month, so the expenses saved by the electronic menu of the iPad ordering system can be imagined.