its true a remote start voids thatchcam catergory approval. One key is left under the dash near to immobiliser pickup so that your car is mobilised for remote engine starting. i had this on my clio and my v70R However if you get blackjax, then even if your car keys are taken the thief cannot start the car unles they type in the 4 digit code to enable the fuel pump and ignition, but this means you have to type in the code everytime you want to start the car. can be truely annoying and embarrasing if you get it wrong. Remote start is a good thing for winter and looks cool when people see you start your cer via a remote, however remember to leave the car in neutral or park, there are safety devices for this on the alarms, and also the steering lock.