I have made enquiries into the safety of my new keyless entry jazz ex. To get the story straight, I rang 5 different dealers, who all tell me that security of the keyless jazz cannot be compromised by a range extender. Now I understand why they say this, and it's probably because the thieves really wouldn't want to steal a honda, they want the big fish range rovers, mercs, BMW's.etc. So when I put this to the dealer in London where I purchased my car from, he suggested I go on eBay, and purchase a Faraday pouch for a fiver...Really !!!!! Honda have installed an immobilizer, and alarm, and also supposedly decent locks on these vehicles, to now tell me that if I don't buy a pouch off eBay, I could go out and find an empty parking space where my jazz was. I am still hoping the lovely thieves in today's society are too scared to damage there street cred to come and steal my jazz.. The morale to this sad story is, just make sure if you have a keyless car, you do indeed go and invest in a pouch , just incase some scumbag opens your car by mistake