How about a free coffee in exchange for a yawn? Well, apparently there is a machine that can dispense coffee when you yawn.
Dutch coffee company Douwe Egberts made a coffee vending machine with facial recognition technology and placed it in front of tired red-eye travelers at the airport. It dispensed free coffee only when customers yawned.
The campaign called "Bye Bye Red Eye" served 210 passengers at Johannesburg's O.R. Tambo International Airport with free coffee. Unfortunately, the machine is not available for purchase or retail.
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