Autowatch Ghost 

The Ghost immobiliser protects your car from key-cloning, hacking, and even key theft. The Autowatch Ghost immobiliser  has no key-fobs or LED indications to give away its location & The Ghost immobiliser uses the buttons in your vehicle such as those on the steering wheel, door panels or centre console, to allow you to make a unique, changeable, disarm sequence (like a PIN code) that must first be entered before you can drive your car. Just like your credit card but you can make your car disarm sequence even safer by making it up to 20 presses long! The ghost Immobiliser can be fitted fully mobile at your home or work. 

 
Disarm sequence via existing buttons 
Completely undetectable 
Service & valet mode