Human exposure by mobile phones in enclosed areas.

Human exposure by mobile phones in enclosed areas such as train carriages, elevators, and cars is considered. Equivalent power density and whole body specific absorption rate (SAR) are estimated by applying multimode resonant cavity theory and a straight forward worst case approach. The results show that exceeding the International Commission on Non-Ionizing Radiation Protection (ICNIRP) guidelines due to simultaneous use of several mobile phones in enclosed areas is highly improbable.