This robotic barista never needs a coffee break

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The robotic arm manning Cafe X at the Metreon shopping center in San Francisco looks very caffeinated as it frantically swings from one side of its enclosed bar to the other. 

Along with the help of two fully automatic coffee machines, the arm can whip up anywhere from one to four drinks a minute, depending on the complexity of the order. 

Customers can place an order either by using the company's smartphone app or through one of the kiosks at the cafe. Once their order is ready, customers receive a four-digit code, which they use to pick up their drink. Efficiency is key. 

"In today's world, you have two options for getting a cup of coffee: you're either in and out with something subpar, or you're waiting in a 15-minute line for a great cappuccino," said Cafe X CEO Henry Hu. "I started Cafe X to eliminate that inherent compromise and give people access to a tasty cup of coffee consistently and conveniently."

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