Heuristics for media dispensing in automated teller machines (atms)

According to embodiments described in the specification, a method of dispensing media from an ATM is disclosed. The method includes the steps of: at an electronic device including a processor, a memory, and a touch-sensitive display, displaying a first mix of media items for dispensing by the ATM; receiving input from the touch-sensitive display including a first mix adjustment parameter; applying a heuristic based on the received first mix adjustment parameter; displaying a second mix of media items; receiving input from the touch-sensitive display comprising a second mix adjustment parameter; re-applying the heuristic based on the received second mix adjustment parameter; and at the ATM, dispensing the second mix of media items, the second mix responsive to the applying of the heuristic and the re-applying of the heuristic.