Slot machines used to tower over casino floors in cabinets more than 40 inches...

https://www.slideserve.com/abigail_gray10/how-close-do-you-hold-your-phone-when-playing-mobile-slots

Slot machines used to tower over casino floors in cabinets more than 40 inches tall, heavy and immovable. Now, many games fit comfortably on a 6-inch phone screen, letting players spin reels anywhere