I like the red/green cards at Brazilian steakhouses. Maybe you can write an article about that too.
I don't like design 'solutions' which kills human to human interactions.
It's not that hard to ask the waiter 'may I have a refill please'. Unless you're so vile while you're eating can't comprehend your surroundings AND don't want to be disturbed while eating -like a dog.
Sorry to break your enthusiasm and fancy bs buzzwords but this not a 'clever' design. What I feel about this thing that supports modern slavery where waiters are positioned as a refill machine and have to memorize which table needs to refill glasses. Waiters tend to remember tables by the faces of the customers. And this solution eliminated face to face dialogue with both ends.
Waiters, workers, and everyone else are human too. and this solution is insulting to the waiters who work their ass off for people overpaying their burgers.
eh what ever. it's just another seo booster article anyway.
So you don't like the e-commerce, or netflix, or the internet?
You must be fun at parties.
See, i think you've got this all wrong and need to chill. Although the actual wording "refill me" is slightly off and should be more humanised i reckon In the UK most people would love this for completely the opposite of what you've written.
Me: oh I've finished my drink, i want another but the waiter looks super busy, i don't want to bug them just for a drink that i'm in no real rush for.
Me: slides my empty glass on to circle.
Waiter (a few minuets later, when he's/she's finished dealing with a table): Hi, would you like another drink?
Me: Yes please
Waiter: No problem (then fills my glass)
Waiter: No worries
...everyone is happy