No Cash Needed At This Cafe. Students Pay The Tab With Their Personal Data – NPR

https://www.npr.org/sections/thesalt/2018/09/29/643386327/no-cash-needed-at-this-cafe-students-pay-the-tab-with-their-personal-data

By doing so, the students also open themselves up to receiving information from corporate sponsors who pay the cafe to reach its clientele