Neonatal hypothermia affects an estimated 17M newborns annually in developing countries. (1) It is a comorbidity of hypoglycemia, infection, and hypoxia, and is a significant contributing factor to mortality. The early stages of hypothermia are invisible, so it is often undetected. (2) However, if caretakers recognize hypothermia and warm the babies, there is a markedly increased chance of survival. Early detection is paramount, and a tool to detect hypothermia is a critical part of the solution