GPS system is very comfortable thing that GPS system is used to track the people , important product and to find the place where people arrive. But in now, many group of IT such as Google, apple store the information about tracking people. some people have think this problem is seroious. but I think this problem is not serious because GPS system's role is to track something. For example, I am very interested to use facebok check-in system. check-in system is used to be proud of going there. and many people use device about the smart phone, navigation system through the GPS system.
But the information to track something is not used to dangerous situation. Google and apple collect the information about tracking people. after this problem announce the media, google and apple change the policy of GPS system. but I think this policy is good because google send the coupon of which tracked by GPS system usually go to the shop. and then people use the coupon. and the shop sells more product.
overall, GPS system is convenient system. but this system is used to help people.
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