Now a days we are using keyless remote to entry in your car or start your car, keyless entry help us to unlock and lock it faster and easier, but what happens if you forgot to lock your car and you are some far from your car (example : your car is in ground and you are in 2nd floor of the building and when you press the lock button it doesn't work because of low range). 75% of keyless system that can only operate in low range because of some reasons, so it wouldn't help us better.
