I have been to restaurants where they bring you a tablet that you keep at your table. It has the menu and everything on it. You order what you want from it, foo

I have been to restaurants where they bring you a tablet that you keep at your table. It has the menu and everything on it. You order what you want from it, food or drinks, at any time and a waiter brings it to you. I found the experience better than ordering from a waiter and better than using your own phone. I've told that chains in China have now replaced this last bit "a waiter brings it" by a little robot.