Petfon has a feature of "WiFi assisted location". In areas with high wifi density, it would help us improve location speed. After opening the WiFi assisted location, our device could automatically access the WiFi locations in the surrounding areas, and use them as reference to position itself. It would help us a lot in improving the positioning speed in WiFi intensive areas. You don't need to login or access any of these WiFi, the system would use them as location reference automatically.