The problem with using an app or making parents take temperatures at home is that its a useless exercise. How many parents in the past have gone to work sick because they can't afford to miss a day? How many parents have sent a kid that is marginally sick to school so they don't have to stay home and miss a day of work they cant afford? Do we think that will change? Those folks pushing for full in person instruction so they can go to work, aren't going to keep their kids at home.