The practical wins over paper are speed and visibility. A screen shows every open order at once with how long each has been waiting, so the kitchen can see what is ageing rather than discovering a forgotten ticket at the bottom of the rail.
It also cuts running costs and mess: no paper rolls, no ink, no tickets curling in the heat above a grill.
A KDS suits kitchens with several items per order and a real queue. A small counter selling three things does fine with a printed ticket, and adding a screen there is cost without benefit.
Outale's KDS shows live tickets with priority flags and per-item special instructions, lets staff mark items complete or clear them, and can recall a recently cleared order back into the queue when something goes wrong.