China said it would stop tracking some travel, potentially reducing the likelihood people will be forced into quarantine for visiting COVID-19 hot spots, as part of an uncertain exit from the strict pandemic policies that helped fuel widespread protests. Once midnight hit Monday, the part of a smart phone app that recorded a person's travel between cities and provinces showed an out-of-service message. Another app used to restrict the movement of those who test positive or enter an area with a recent outbreak remains in effect. They're part of a package of pandemic apps, some of which have also been...