Slot machines used to be huge, bulky cabinets that took up 40+ inches of casino...

https://riverssmartchat.novacrestiq.com/posts/why-do-slot-machines-need-locks-and-maintenance-access

Slot machines used to be huge, bulky cabinets that took up 40+ inches of casino floor space. Now, many games fit comfortably on screens as small as 6-7 inches, right in your pocket