The personal wear of GPS is mainly applied to products for the elderly and children. Like location watches, location phones, and multifunctional crutches. But is it really that accurate? Reality is not as precise as you imagine. But when children or elderly people get lost in the mall, the positioning provided by GPS locators is usually based on base station positioning, because there is no GPS signal indoors.

　　Isn't this saying that these GPS products are useless? Although it may not achieve 100% accuracy, the approximate location can still be determined. Some products also come with base stations and wifi positioning in addition to GPS positioning. That way, the accuracy of positioning in the mall can be greatly improved.

　　Nowadays, many car owners will install GPS locators for their beloved cars, which can be used to check the real-time situation of the car through mobile apps. There are two scoring scenarios. If you are outdoors, the positioning accuracy can reach below 10M, and you can find your beloved car very accurately. But when the car is in an underground parking lot, GPS has no signal. If there is a built-in base station positioning or WIFI positioning function, you can still know the approximate location. If not, then you will be blind.

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