Since you mention it McDonalds kiosks specifically, here's my UX observation. It takes 10 touch screen presses to order and pay for a single item, also having

Since you mention it McDonalds kiosks specifically, here's my UX observation. It takes 10 touch screen presses to order and pay for a single item, also having to locate touchpoints (not always buttons?) which move up and down by several ft.