Review on GEKKA Infrared Forehead Thermometer for Adults - Wall-Mounted Non-Contact Digital Temperature Thermometer with Fever Alarm - Accurate Instant Reading LCD Display for School Office by James Wiley

I decided to install the device with a permanent USB cable to power it and I just leave it on! It might not be as accurate as much more expensive models, but it will give you a good approximate measurement. You decide for yourself which upper limit is comfortable for you. So far, no one has had a temperature above 100.2. most are under 98.6, with an average of around 98. I always register lower myself because I tend to sweat more, so my forehead is usually colder.