I've ridden all over florida with mine i just put it in my backpack and it always go through. as for the strenght of the sun pass, i forgot to put money on it one day (when i say I, i mean my wife) halfway across the state its out of money. So i put it in the console of my truck, still went off, so then i put it under the seat under, under my fats ass FUCKING THING STILL WENT OFF!!!!!!!!!