Let the line order itself
At peak, the constraint is not the kitchen. It is the one person standing between the queue and the kitchen, taking orders one at a time.

Make it a meal?
Fries and a drink with your Crispy Chicken Sandwich.
Yes, add both
+ $4.00
No thanks
Just the sandwich
The upsell, where the choice is made
The prompt appears at the point of deciding rather than when somebody remembers to ask. Yes adds both; no moves on. Either way the line keeps moving and the order lands in the same kitchen queue as the counter.
What it actually does
Order and pay in one place
Card taken at the kiosk, receipt printed or sent, straight into the same queue as the counter.
Upsells where the choice is made
The prompt appears at the point of deciding rather than depending on somebody remembering to ask.
The same menu as everything else
One menu, one set of prices. Change it once and the kiosk changes with the till.
Floor or counter mount
Stand it in the queue or bolt it to the counter, depending on where the line actually forms.
Handles the rush, not the relationship
Staff stay on the floor and on the food. The kiosk absorbs the repetitive part.
Accessible by default
Reachable heights, large targets and readable type, because a kiosk somebody cannot use is a queue with extra steps.
What it is not for
If your guests expect to be greeted and talked through the menu, a kiosk gets in the way of the thing they are paying for. It belongs where the queue is the problem.
Next to this
POS terminal
Every screen here exists to shorten the gap between a customer deciding and a customer leaving. That is the whole design brief.
Kitchen display
One printer for the whole kitchen is how tickets go missing and how the argument about who dropped it starts. This replaces both.
Hardware
Terminals, handhelds, kitchen screens, printers and drawers.
Ten minutes on the phone
We ask what you run today and what it costs you, then put a rate and a hardware list in writing. If staying where you are is cheaper, we say so.