Do Hands Free Ear Pieces For Mobile Phones Reduce Exposure To RF Emissions?
On the other hand, if the phone is mounted against the waist or other part of the body during use, then that part of the body will absorb RF energy. Even so, mobile phones marketed in the U.S. are required to meet safety limit requirements regardless of whether they are used against the head or against the body. So either configuration should result in compliance with the safety limit. Note that hands-free devices using “Bluetooth” technology also include a wireless transmitter; however, the Bluetooth transmitter operates at a much lower power than the cell phone. A number of devices have been marketed that claim to
"shield" or otherwise reduce RF absorption in the body of the
user. Some of these devices incorporate shielded phone
cases, while others involve nothing more than a metallic
accessory attached to the phone. Studies have shown that
these devices generally do not work as advertised. In
fact, they may actually increase RF absorption in the head due
to their potential to interfere with proper operation of the
phone, thus forcing it to increase power to compensate. | ||||||||
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