Personal GPS locator which crowd?
For the elderly, children, the disabled, the blind, the company clerk, security officer, law enforcement, traffic police, patrol, patrol police station construction, patrol, patrol the railway industry, power repair personnel, postal courier logistics company, the receiving clerk, athletes, field working personnel, forestry inspection, travel company tour guides, tourists, prison migrant workers etc..
Someone has answered. In short, as long as there is a positioning or anti loss requirements can be used.
Can play the scheduling management, rescue, data collection, to bring convenience to the management of life and enjoy.