For example, you can order dishes on handheld devices that run on your Iphone, Androi, winphone, restaurant, coffee shop, and so on. Any programming language that runs on the above devices, for example simple you have to share yourself with.
I find the software for ordering in the cafe, ... they use Ipad to order food. Employees bring out an Ipad to order food for customers choose the items, when selected will save to SQL Server, do you go to the coffee shop called dish like this ?
It seems to me that would get pretty messy right off the bat. My cell could only hold a stack of about 10 wings before they started falling off; plus how do you use the phone with all that food stacked on it? and your greasy fingers from the wings?/s