[KoolKav]

Any one using tracking devices on their bike?
I've been told that the GPS devices are useless once your bike's in a garage/van (Phantom Tracker aprox £500+subscription).
MST bike gaurd looks more promising using GSM via mobile phones but the accuracy leaves a lot to be desired (a 'few hundred' metres to 1000 metres depending on location) but is better value £300 approx.
Do you have any experiences or recommendations?