[unluky]

I'd do it. You can "what if" all day long. I mean the chance of getting broken into are fairly low - the chance that someone breaks into your car AND spend the time to find your key card AND that person knows what it is and how to use it? Your talking lottery numbers here.

I mean for my remote start in one of my cars I have a "dead" fob in a key box 24/7. Could someone bust out my window, dig out that fob, put a battery in it and start and drive off in my car? 100%. Is it likely? LOL - not very. Worth the 0.0000001% chance to me to have a remote start.