Slot machines once took up entire aisles with cabinets over 40 inches tall and...

https://celebmeadow.com/from-floor-standing-machines-to-pocket-screens-the-shrinking-footprint-of-slot-games/

Slot machines once took up entire aisles with cabinets over 40 inches tall and weighing hundreds of pounds. Now, they slide into your pocket on phone screens just 6 inches across