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requirements regardless of whether they are used against
the head or against the body. Either configuration should
result in compliance with the safety limit.
Do wireless phone accessories that claim to shield the
head from RF radiation work?
Since there are no known risks from exposure to RF
emissions from wireless phones, there is no reason to
believe that accessories that claim to shield the head from
those emissions reduce risks. Some products that claim to
shield the user from RF absorption use special phone
cases, while others involve nothing more than a metallic
accessory attached to the phone. Studies have shown that
these products generally do not work as advertised. Unlike
"hand-free" kits, these so-called "shields" may interfere
with proper operation of the phone. The phone may be
forced to boost its power to compensate, leading to an
increase in RF absorption. In February 2002, the Federal
Trade Commission (FTC) charged two companies that sold
devices that claimed to protect wireless phone users from
radiation with making false and unsubstantiated claims.
According to FTC, these defendants lacked a reasonable
basis to substantiate their claim.
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