In this Monday, March 31, 2014 photo Tim McCormack, of Boston, exposes a QR code on his camera to a Liberty Teller ATM while purchasing bitcoins at South Station train station, in Boston. (AP ... more 
In this Monday, March 31, 2014 photo Tim McCormack, of Boston, exposes a QR code on his camera to a Liberty Teller ATM while purchasing bitcoins at South Station train station, in Boston. (AP Photo/Steven Senne) less 
1 / 1
Associated Press | Photo By Steven Senne
Thu, Apr 3, 2014 3:24 PM EDT