i just saw an interesting gadget that allows your android camera to become a thermal imager.
https://www.amazon.com/Seek-Thermal-XR-Imager-Android/dp/B00SSZ5KQI/?tag=email_evergage-20&ascsubtag=TGUS151179802875074-gclid--POM&SubscriptionId=AKIAJLYKPRLXUSF4GDIQ&linkCode=xm2&camp=2025&creative=165953
https://www.amazon.com/Seek-Thermal-XR-Imager-Android/dp/B00SSZ5KQI/?tag=email_evergage-20&ascsubtag=TGUS151179802875074-gclid--POM&SubscriptionId=AKIAJLYKPRLXUSF4GDIQ&linkCode=xm2&camp=2025&creative=165953