can cause accidents say ophthalmologists even though police book around 53000 cases every year activists want action against the manufacturersbluetooth helmetsmart helmets seem to be getting popular as they can be connected to the phone top manufacturers too have started to sell them these helmets which also use noise suppression technology offer not only clear music but also allow calls may be a convenient accessory they are available at2300 per piece but it is dangerous such helmets can cut off the concentration of the driver and they might run out of control when another speeding vehicle overtakes them also listening to songs can influence driving patterns and sometimes result in unsafe and reckless driving said balaji damodharan who owns a helmet store in chennai this relatively new product in the market has made police personnels work difficult fieldlevel officers currently check whether a biker is wearing a helmet and it is practically not possible for them to check if it has an inbuilt bluetooth speaker or not