that's funny I guess they are not as announced as GM does with their keys (Passlock). I don't think my frontier has anykind of chip in it's key or maybe it does... Still I think GM is the only one that gets real expensive to install keyless start cuz you have to get some module from GM that will make aftermarket system compatible.
Black Knight - 2004 Crew Cab XE-V6 4x4
"...God made men the way they are because we desperately need them to be the way they are. Yes, a man is a dangerous thing, but so is a scalpel. You don't make it safe by making it dull, but instead you put it in the hands of someone who knows what he's doing." - John Eldridge