tracking: add line string for devices
tracking: add line string for devices

rockychen-dpaw/gokart,parksandwildlife/gokart,rockychen-dpaw/gokart,rockychen-dpaw/gokart,wilsonc86/gokart,parksandwildlife/gokart,wilsonc86/gokart,parksandwildlife/gokart,wilsonc86/gokart,parksandwildlife/gokart,rockychen-dpaw/gokart