Abstract: A measuring device for measuring a body temperature of a living being includes a measuring unit for measuring the body temperature. The measuring device includes a first adhesive layer for fastening the measuring device on the body of the living being. The first adhesive layer is arranged at a side of the measuring device intended to face the body when the measuring device is in use. The measuring device includes a skin-compatible protective layer, which is arranged between the first adhesive layer and the measuring unit.