Shiru Cafe looks like a regular coffee shop. Inside, machines whir, baristas dispense caffeine and customers hammer away on laptops. But all of the customers are students, and there's a reason for that. At Shiru Cafe, no college ID means no caffeine.
"We definitely have some people that walk in off the street that are a little confused and a little taken aback when we can't sell them any coffee," said Sarah Ferris, assistant manager at the Shiru Cafe branch in Providence, R.I., located near Brown University.