Gah can't believe I missed this!

They were in a vending machine at my gym last month! Apparently the promo was only for 30 days, but in that time they did sell a few (according to the guy that works there). I saw some guys wearing them (since the gym is above the swimming pool so you can look down) and it works without a smartphone. I'm pretty sure the water is drinkable as well.

Pretty bizarre that people had to put cash in to buy it though. I don't remember there being a Eftpos terminal at all.

Strange this just popped up today though, since I haven't seen any of these vending machines around in the last few weeks.