ding "You were in a store where an infected person shopped yesterday" ding "A postal worker who may have handled your mail is infected" ding "You bought takeout pizza from a company that may have an infected employee" ding "You used a public restroom that was out of hand soap" ding "When is the last time you sanitized your iPhone?" ding "You've been outside your house too long, iPhone knows you haven't been jogging for two hours"