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Tshwane University of Technology

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A brand new cellular anti-hijacking system (CAS) designed and developed by the Tshwane University of Technology’s (TUT) Technology Station in Electronics (TSE) will also be able to detect if a vehicle has been stolen. CAS will alert the user when an intrusion has taken place. 

The user is able to arm/disarm CAS, which is installed inside the vehicle and is monitored with a remote control or via a cell phone. CAS is equipped with an ultrasonic sensor, microphone, speaker and backup battery and notify the user and or additional persons via cell phone by sending an SMS to the relevant cell phones.

The user can dial into the CAS and listen to the sounds inside the vehicle, and talk back to the vehicle and disable the vehicle remotely. Should the need arise, the user can even cut off the fuel line using his cell phone. CAS is also equipped with a panic button to send out a distress call/SMS to a selected number or phone numbers.

According to Anton Smit, project leader, it is one of the interesting project the TSE has been tasked with. “Personally, it was my first GSM-based communications design, which afforded me the opportunity to work with the international 'AT-commands' standard," he said.

"AT commands are used to control MODEMs. These commands come from Hayes commands that were used by the Hayes smart modems. This is the standard that I have used ever since starting to work with both GSM and GPS modules."

External view of the device in protective enclosure (Beside
phone for size perspective).

Cellular anti-theft system; populated and tested device PCB.



For more information on the Tshwane University of Technology please contact Willa de Ruyter on tel: 012 382 5352 or send an email to