Security is a prime concern in our day-to-day life. Everyone wantsto be as much secure as possible. The importance of GSM technology is increasing day today so an access control system using mobile phones indicates a vital security link.Making use of this wireless technology for device accessing or controlling by sending anSMS or by making a call from the control unit with help of Micro controller and GSMmodem we can monitor and provide security.
Despite of many issue I guess the proposal quite good for security purposes. After all maybe a network controlled devices or GSM, both of these can be controlled by signal jammer as well… One more thing, burglars they will probably bring anything but not a signal jammer.