Artificial Intelligence applications are creating algorithms for detecting eye diseases, detecting a cough from someone who has Covid-19 but is asymptomatic, and for other health-related diagnosis. Smart health devices have come a long way from just counting steps - they now can track sleep cycles, monitor EKG, oxygen saturation, and blood glucose levels, as well as providing many other fitness and health related data. Also, an article on the veracity and usefulness of Covid-19 testing.