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Yawn and have a cup of coffee!
At O.R. Tambo International Airport in South Africa, there is a coffee vending machine, but it doesn't really charge money. As long as you yawn at its facial recognizer, it will know that you are tired, so a cup of delicious coffee will be delivered to you.
2015-10-28 Hit yawn coffee South Africa O.R. Tambo international airport one -
Intelligent coffee machine: yawning to deliver coffee
When you're sleepy, yawn and get free coffee right away? Although it may not sound credible, it is true that pie falls from the sky and charcoal is sent in the snow.
2014-05-29 Coffee news coffee machine creative coffee machine