The thing is that this can only be done when your Bluetooth is on AND your device is set to discoverable mode, though there are two Nokia handsets (the 6310 and 8910) which are vulnerable even when they are not in discoverable mode, and if you have one of these youneedto get a firmware upgradeto prevent the attack.
It will provide a detailed compatibility report that lets you know of anything you may have to address before or after the upgrade, and outlines any actions that you might needto take.
It's a slick setup that allows youto save space for music tracks, and more importantly, you never needto worry about losing your shots if you lose or upgrade your phone.