Will it be possible to use your favorite crypto to buy soda or snacks from a vending machine? I haven't seen a real world example of this, but it would be cool to have such a thing. This would only work on coins with large network capacity (low fees and fast confirmations), though. I think Solana, Tron, Litecoin, and Dogecoin would be the ideal payment methods for vending machines.
What do you think? Will crypto vending machines become a reality soon? Or are they a distant dream?
Your input would be greatly appreciated. Thanks.

honestly this kind of thing just few step away from happening, there has been so many payment gateway utilizing stablecoin in a fast network, with just qr code scan you already paid the invoice, this basically solved people's complain about volatility, and these payment gateway also support multiple networks, this can definitely be implemented or integrated in many vending machine but nobody seems to be interested in doing it because maybe it's too niche but I can see it happening in the future.
however sure the technology is already good enough for this kind of thing, like for example using solana, it requires only seconds for a tx to be confirmed, so it's viable.