> Well ok, necessity is the mother of invention.

"People say it's very inhospitable. But it's the epitome of hospitality. It empowers the guest to get in and to get out."

> Wow, the irony (and sadness) are overflowing.

The only time I can really see this being more useful to me, is when I can't get a hold of my wait(er/ress) to bring the check or run my card. And here's a better idea that I'm a give you all for free. Near field communication with cellphones and a chip in the table. Open up my payment app, close and pay for the check with my cellphone. Put a few bucks tip on the table and leave like it's the old days before credit cards.