Security Enhancement Methods for Mobile POS System

Nowadays, contact less payment solutions with credit cards based on a mobile phone have significant advantages in transaction speed and users´ convenience. Especially, for merchants, a smartphone can be one of an acceptance payment solutions because it is easy for them to use with little additional price if they could use their own smartphone as it is. However, there are still many concerns on using NFC-enabled smartphone as a mobile POS, e.g. Security concerns. In this paper, we proposed new security enhancement methods for the mobile POS system with a new S/W layers based on pre-existing H/W. As a result, we could see the possibility of building a mobile POS system based on existing mobile phones with proposed methods.