An anti-theft system is a technology or a device employed to deter or prevent the unauthorized access of valuable items. Anti-theft systems have evolved from the invention of lock and key to the introduction of biometric identification systems. The choice of an anti-theft system depends on various factors such as financial costs, ease of use, and threshold for theft. Security of vehicles, especially in common parking places has become a matter of concern in recent times. Vehicle theft has skyrocketed to monumental proportions in recent years, and many injuries can be attributed to accidents involving stolen vehicles. One of the reasons for the increasing theft rate is the ease to tamper the existing vehicles locks. Anti-theft devices add to the security of vehicles and may also lower vehicle insurance rates. Products under the anti-theft devices category have a wide range of features and purposes. Some basic devices disable the vehicle, while others provide advanced protection like stolen vehicle tracking, interior intrusion detection, battery backed sounders, inclination sensing devices, etc. Modern vehicle anti-theft devices use advanced technologies such as microprocessors with digital signal processing, continuous-wave and pulse-echo algorithms, inclination and ultrasonic sensors, rechargeable batteries, and closed tool chain for configuration and simulation.