Portable security system using communication cards

Abstract

Our project is based on wireless communication between two plastic cards, each card has been adjusted to be sensitive in receiving and sending signals from the other card. This idea is based on PIC 18F4520 microcontroller which is the main part in our project . PIC 18f4520 microcontroller controls and performs the main activities in this project. Each communicating signal between the two cards holds identifying code known to the other card . receiving or sending signals between the two cards will compare the held code according to the code stored in the microcontroller memory. If this comparison process is correct , every thing goes well and the alarm system will not activated , but in case error the alarm system will be activated by the microcontroller. This microcontroller is having very sensitive specifications through its influence on activating the alarm system to give sounds on both sides in case of danger. Our aim is implementing this idea for saving valuable things from being taken by thieves and also protecting children from kidnapping or abduction.