As bars check IDs with PatronScan, its manufacturer, Servall Biometrics, touts a global database with 40K+ banned patrons, amid fears of enabling discrimination (Susie Cagle/OneZero)

Susie Cagle / OneZero:
As bars check IDs with PatronScan, its manufacturer, Servall Biometrics, touts a global database with 40K+ banned patrons, amid fears of enabling discrimination  —  PatronScan says it sells security.  Privacy advocates worry it's selling mass surveillance.