Thats not a bad point!! Actually what if mobile phones can have sensors in them that show direction/movement etc we should be able to buy something that goes into the car! What do you recon? Remember, this was my idea!!Funnily enough, if i go to a car park, i always take a photo of the cars either side of me!! so that i have their number plates just in case!! sneaky eh!!
think you'll find most mobiles already have those sensor in them