Preventing shoulder surfing in secure transactions

Information and computer security are supported largely by passwords which are the principle part of the authentication process. The personal identification number (PIN) is common authentication method used in various devices like ATM's, mobile devices and electronic door locks. This PIN entry method is harmed to shoulder surfing attack (SSA). When user enters their pin number in populous place, attacker observes the pin number over their shoulder. This is called shoulder surfing attack. In this paper we will propose a method to prevent this SSA attack. We do this through the use of advanced BW (Black White) method and session key method by changing the layout of the keypad.