Free Coffee if you yawn in front of the coffee machine
"South African coffee company Douwe Egberts believes people will love their coffee once they have tried it—to let more people try their product, they placed a coffee machine at the O.R. Tambo International Airport."
This coffee machine was different from others around the world. Coffee machines we see regularly gives out coffee if people insert the money. But this one gives out coffee when people yawn in front of the machine.
This was possible because the machine has facial recognition software. It detects people yawning.
Once it detects a yawn, it starts to dispense a steaming cup of coffee for FREE.
Watch the video it's simply amazing.