It would be better to use a higher accuracy sensor so that I could lower the error bounds in the code.
For example a 0.5°C accuracy thermometer: 38°C could show as up to 37.5°C, which would mean that a person with a fever would be considered well below fever temp. Therefore, in the code, i'd have to set the 'fever line' at 37.5°C to be safe. However, many people have this temperature as there normal body temperature, and would therefore falsy be recognized as having a fever.
Alternatively, a 0.2°C accuracy thermometer would mean that a fever line of 37.8 would be safe, affecting less people with that body temperature.
Am I missing something?