<![CDATA[Security for car can be done in various ways, for instance the usage of steering wheel lock and car alarm. To prevent the car being stolen is better to use steering wheel lock but it is not able to protect what is inside the car, such as tape, accessories and the equipments inside the car. On the other hand car alarm has more advantages, beside preventing the car being stolen also protecting the inside components. Disadvantages of the usage of car alarm is it if easily to be deceived by burglars, therefore a system which merged the technology of car alarm using sensor and microcontroller with technology of SMS and MMS that support the media sending of text and picture. The aim of the system is as if the car being stolen, the owner of the car can get the information about the stolen by SMS and the picture of the suspect can be seen by MMS, so that it helps the authority to blow the case. From experiment, infrared sensor and ultrasonic sensor can be used to detect motions in the car, the sending of SMS and MMS worked out well based on the system.]]>
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