Profile of Japanese-owned Shiru Cafe at Brown University in the US, where students pay with their personal info like names, email addresses, and their majors (Chaiel Schaffel/NPR)

Chaiel Schaffel / NPR:
Profile of Japanese-owned Shiru Cafe at Brown University in the US, where students pay with their personal info like names, email addresses, and their majors  —  Shiru Cafe looks like a regular coffee shop.  Inside, machines whir, baristas dispense caffeine and customers hammer away on laptops.