One of such example is when they offered us a "Smart Cup" on our Cruise (Royal Caribbeans). It has built-in chip so it know who it belongs to.

So you go to drink fountain, puts your cup in, LCD display nicely says your name (wow) and then you click which drink you wants and the cup fills in, while the display tells you from now on it remembers your favorite drink. Can't be better huh?

Five minutes later I go for a refil: "Sorry but you drank a cup less than 45 minutes ago. Please come back in 39 minutes".

I came back, but to the front desk to get a refund. Instead, I replaced it with more expensive regular cup that you could go to cafeteria and get refils of pretty much anything you want to as often as you wanted to.