In 2012 Pew Research reported that 53 percent of Americans owned smartphones and, of those, 20 percent had downloaded at least one health-related app. By 2015, a national survey found that 71 percent of Americans owned a smartphone or other wireless device and, of those, 32 percent had downloaded at least one health-related app, fulfilling "the public's desire for 'anywhere, anytime' monitoring, diagnosis, and treatment."

Shoshana Zuboff, The Age of Surveillance Cap…, loc. 2312