All I want is to be able to order my food and a refill on water without having to wait. This technology has existed for decades but the US resists it.
What I'd like is for a "wait free" experience to spread beyond counter-serve. I have, very rarely, seen a QR code I can scan on the table allowing me to order and pay via phone. Then my food just arrives. That's seamless and frustration-free.
No ordering though. don't know if refills could come out.
EDIT: pho #1 in sunnyvale ca