Never one to shy away from fringe crusades, San Francisco Sen. Mark Leno (D-San Francisco) is pushing legislation to make San Francisco's law that requires retailers to inform consumers of possible risks of cellphone use, mandatory statewide.
And it turns out that cellphone companies don't think this idea is so crazy.
Though each manufacturer varies the wording, all advise that your phone could exceed the FCC's 1.6-watt-per-kilogram SAR limit (the measure by which the FCC considers phones safe) if you don't hold it at a short distance from your body while it is transmitting. You'll find such a warning for almost every phone sold in the United States.
"To maintain compliance with FCC RF exposure guidelines when you carry the BlackBerry device on your body, use only accessories equipped with an integrated belt clip that are supplied or approved by Research in Motion. Use of accessories that are not expressly approved by RIM may violate FCC exposure guidelines and might void any warranty applicable to the BlackBerry device. If you do not use a body-worn accessory equipped with an integrated belt clip supplied or approved by RIM when you carry your BlackBerry device, keep the BlackBerry device at least 0.98 inches (25mm) from your body when the BlackBerry device is transmitting. When using any data feature of the BlackBerry device, with or without a USB cable, hold the BlackBerry device at least 0.98 inches away from your body."