when i was poring over old posts a member said he was having problems starting his mark and someone asked him if he had bluetooth accessories, does this technology mess with the vehicles electronics somehow?

I know that some people have noticed that sometimes when they have electronic devices near the ignition switch (like a palm pilot or gps), it can mess with the PATS system and your car won't start, cuz it's getting interference and can't read the chip in the key.