[trotsky]

It's not that big of a security breach but it'd absolutely be annoying is anyone could do it on the train. People don't steal your mail but as soon a firesheep came out a dozen jokers a block were logging in to people's facebook.

Make it so it doesn't interrupt your headphones and then all of a sudden it's trivial for anyone to listen to at least half of your telephone calls.

Most BT headsets already pose a serious everyday security risk to people who might be targets of surveillance by as minor players as private detectives or journalists due to both protocol and chipset weaknesses. BT security has been improving since then, but the last thing it needs to do is go backwards because you can't be bothered to pair a device with your car once(!)