University of California, Berkeley students have been tweeting selfies from the company’s "Treat Bot" stationed outside a campus dining hall as they collect free $20 bills for signing up for the service. The service itself is a bit confusing. It's basically a version of Venmo, but with a complimentary black debit card that can earn perks.

http://www.businessinsider.com/clinkle-is-giving-away-free-cash-in-vending-machines-2014-11