international journal is also publised in 2012 on the same topic.this book is related with security system which higher reliable than previous security system.in this book i have mention 3 security factor which are RFID, GSM and FACE RECOGNITION.less human resources is require in this system.this is my first book based on security.i have explain in easy way to understand to every one.i have also mention hardware part for understanding the whole concept of the system through circuit diagram, block diagram and hardware.in this book i have coverd most of the system which are related with any security system.i have given description with block diagram and circuit diagram to each and every part which are related with this security system.there are so manny application where we can use this security syste