Notice to Cracker Barrel and other establishments that I frequent, especially "on the road": I would choose you over the place across the road every time if you gave me a choice like this. Oh, we're going to hear all kinds of things about losing the personal touch...but I heard it about bank tellers, too, and I haven't used one in twenty years. I'll still smile and say a nice word to (and yes, tip) the waitress who refills my coffee or brings my dessert, but let me reduce the chances for error and long waits by using 21st century technology. Please, don't wait until I'm too old to enjoy it.
Think about it...many chains have been using this kind of technology for a long time, having the wait staff transmit the order to the kitchen electronically. Why not the customer? How many of us are at least as capable as the person who takes our order?
By the way, I tried to find a photo for this post, and are you surprised that the only ones I could find were in Japanese restaurants?