👉 The WhinCheck, also known as the Whin Check or the Whin Check Box, is a device used to check if a person has a pre-existing condition. It's typically used by doctors and medical professionals to confirm that someone is not allergic to a particular substance or product. The Whin Check works by placing an object in a certain location (usually on a patient's body) and then checking the temperature of it with a thermometer. If the temperature remains constant, the object has not
