Panera uses iPads with attached card-swipes mounted on a counter top. Sleek and gorgeous. Ordering is a breeze. One restaurant near here has six of them.
Of course, Panera really needs them. For some reason, it takes Panera customers unduly long to give an order to a human, such that it's not worth going in (to a store without iPad ordering) if there's any kind of a line.
Probably because it's the same clientele that stands in front of the sugar and creme counter at Starbucks endlessly stirring their coffee and checking for proper sweetness while posing importantly as if they had just purchased a Bugatti Veyron.