https://thenextweb.com/apps/2019/04/11/activision-blizzard-health-data-tracking-apps/

The Washington Post this week reported Activision Blizzard has been using various apps to track its employees’ health data — including their pregnancies and sexual activity — by receiving anonymized data from health apps the employees are in no way, absolutely not compelled to use. But don’t worry, they’re properly compensating these industrious workers: they offer them $1 day in gift cards.

The report detailed the sort of data collected by pregnancy tracking apps, specifically Ovia. Ovia’s main claim to fame is its algorithm, which helps its users figure out the best times to conceive a child based on their menstrual cycles. A special version of the app, which employers can pay to offer to their employees, funnels “de-identified” information to a user’s employer, like Activision Blizzard.