All people now a day are focusing on an important issue which is 'security' where all Rigid, worthy dealing with, and creditable companies pay a lot of attention for this problem. Therefore the cost, usage, portability must be taken in consideration. This work demonstrate the use of a smart, small, not expensive and the most important realistic portable lock with portable low consumption power supply and security coverage area with minimum side effect and maintenance. This lock is not the

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... entative for a key but it may represent a badge, an ID, or a credit card or social security card .... etc. So it's very close to the use of the human normal day life and hence it will not be a security burden since the security card may be embedded within other cards like car security card or credit card ...etc. The system is implemented and tested with no need for a sophisticated material but easy equipment may stand enough to achieve the job with very accept able cost. The system achieves high security password and a master electronic key that cannot be copied within the available constraint and high control operating environment and a backup plan in case of key lost.