Jack dorsey is the designer of square reader, which allows smartphones to become a point-of-sale (pos) terminal, and lets small businesses and entrepreneurs process credit-card payments where they weren't able to before because of the fees involved. trish is a manager for a small business owner who is currently locked into a contract with a credit-card company. the owner has asked trish to look for ways in which they can reduce costs, thereby creating a more profitable bottom line. how can trish demonstrate that she understands efficiency, using the concept jack dorsey created?