LEXUS claimed the IS200 anti-theft system was the most sophisticated ever offered in a Lexus when it launched the car. The security system is designed to protect contents as well the car. Keys are laser-milled theft-preventing radar intrusion sensor detects movement inside the vehicle a transponder-type engine immobiliser is standard and a self-powered siren is located in boot. The IS200 is also fitted with specially-strengthened door locks (pictured).