IOSR Journal of Engineering
In this paper, security lock system using Pass code and smart card has been achieved. It is a micro controller based system which aims at interfacing selected hardware components with software to obtain a higher degree of security. In achieving this work, seven major stages were considered in the design methodology: Power supply unit, personal computer unit, micro controller unit, lock system unit, seven segment display, detector unit and alarm unit. The design specifications were strictly followed and the result obtained after construction and testing were very satisfactory. Indeed, security lock system using pass code and smartcard is a surer and safer form of security in this era of tremendous technological advancement.