I don't think this is just for older people. I've seen college students struggle immensely with them. Not only that, but just about everyone who uses it for the first time misses the cup.
But if you think the UI for the end-user is bad, you should see the UI for the people who have to maintain and refill the machine. Having these things internet connected throws a pile of rotten eggs on IOT.
My few problems have always been that a part of the screen is unresponsive, either by not being cleaned recently or being less sensitive due to the amount of use. Even then, pushing harder or holding your finger on longer generally does the trick (and probably exacerbates the problem if it's normal wear and tear).
I have not, though the one time I used one of those machines the UI was very slow to respond to user input, which can be disorienting for anyone. Is it that they are all super-laggy, or are there other things that seem to trip people up?
I couldn't get any flavor of almost any soda, that's what's wrong. Do you want to continue living in a world where you can't have a raspberry diet caffeine free root beer mixed with lime cola?
Yes. I often wonder what they could have done better with the UI to speed up the process for seniors or people who just don't have the patience or interest in all the options they have.
If you don't have an interest in all the options, they have a huge list of defaults[1], and on some machines they have a list of preelected mixes to the side.
I think why people take so long is because it's their 1st/2nd time using the machine, and they want to try out something new. Or in the worse UI choice [2] there's a huge central button that takes you to the mixing selection, and once there its difficult to get back to where you'd select the standard drinks.
