Appendix C: Consumer Update on Wireless Phones198evidence exists that using a wireless phone causes braintumors or other ill effects. Their recommendation to limitwireless phone use by children was strictly precautionary;it was not based on scientific evidence that any healthhazard exists.4. Do hands-free kits for wireless phones reduce risksfrom exposure to RF emissions?Since there are no known risks from exposure to RFemissions from wireless phones, there is no reason tobelieve that hands-free kits reduce risks. Hands-free kitscan be used with wireless phones for convenience andcomfort. These systems reduce the absorption of RFenergy in the head because the phone, which is thesource of the RF emissions, will not be placed against thehead. On the other hand, if the phone is mounted againstthe waist or other part of the body during use, then thatpart of the body will absorb more RF energy. Wirelessphones marketed in the U.S. are required to meet safetyrequirements regardless of whether they are used againstthe head or against the body. Either configuration shouldresult in compliance with the safety limit.5. Do wireless phone accessories that claim to shield thehead from RF radiation work?Since there are no known risks from exposure to RFemissions from wireless phones, there is no reason tobelieve that accessories that claim to shield the head fromthose emissions reduce risks. Some products that claim toshield the user from RF absorption use special phonecases, while others involve nothing more than a metallicaccessory attached to the phone. Studies have shown that
