Abstract: A system and method are provided for warning of an exposure of a second individual to an allergen by transfer from a first individual. Movements of the individuals are tracked so that allergen types and levels to which the individuals have been exposed can be obtained. Using knowledge of user sensitivity information to different allergens, it is determined if the first individual has been exposed to allergen types and levels which pose a risk to the second individual by GPS transfer from the first individual to the second individual. Thus, action can be taken when there is a determined risk of allergen transfer between individuals.

Abstract: Devices, apparatus, and methods of using a solar powered, battery operated, light sensitive toilet seat LED (light emitting diode) lid light device that removably clamps to an edge of the outside toilet seat lid. A solar panel is visible on outside of toilet seat is used to recharge a battery in the device. The underside of device contains the secured battery, circuit board, mercury switch and photocell. When the lid and device are in upright position the mercury switch closes. The photocell senses absence of light and the LED light illuminates the toilet bowl and surrounding area.