Is your smartphone location on? It could be used to track you; here’s how to opt out

As researchers and journalists try to understand how the coronavirus pandemic is affecting people’s behavior, they have repeatedly relied on location information from smartphones. The data allows for an expansive look at the movements of millions of people, but it raises troublesome questions about privacy.

In several articles, The New York Times has used location data provided by a company called Cuebiq, which analyzes data for advertisers and marketers. This data comes from smartphone users who have agreed to share their locations with certain apps, such as ones that provide weather alerts or information on local gas stations. Cuebiq helps app makers use technology like GPS to determine the location of people’s phones, and in turn some of the app makers provide data to Cuebiq for it to analyze.