Interesting, yes I can see why that might be a health issue. But these things have been around for decades now, so presumably they’ve solved this problem. Edit

Interesting, yes I can see why that might be a health issue. But these things have been around for decades now, so presumably they’ve solved this problem. Edit: I found this: IH vending machines This is a type of vending machine equipped with Induction Heating. They store canned beverages at normal room temperature (or lower temperature) on standby and rapidly heat up a selected drink during the process of dispensing. It is possible to raise the heat up to 140 degrees or so in less than one minute in the case of a 250 ml can. https://www.japanesewiki.com/culture/Canned%20Coffee.html https://www.japanesewiki.com/culture/Canned%20Coffee.html