The ThermoSpot is a non-invasive hypothermia indicator for infants. It is a single 12 mm flexible plastic disc that sticks directly onto the skin and can remain on for as long as 7-10 days. It is for use in a facility by a clinician, by a community health worker or by a parent. The device changes color when the baby's core body temperature changes, allowing it to be understood even by a non-literate parent. When it is black the child has severe hypothermia. Note that the device has been tested in Malawi, Nepal and India. The simple device comes in a strip of 5. Five strips of 5 are in each pack. Each thermometer is actually re-usable once it is washed with soapy water making it extremely cost-effective. The inventor of the device is currently pursuing CE marking.