San Francisco Passes Law Requiring Radiation Warnings For Cell Phones “Cell phones cause cancer.” “No they don’t!” “Yes they do.” “No they don’t!“ Back and forth it goes, like the world’s slowest game of tennis. One study spends 6 months proving that cell phones turn you into a giant walking tumor, and another pops up showing that cell phones cause nothing but an increased need to tell people what you’re doing. Whatever the case, the City of San Francisco seems to be done waiting for a conclusive answer. After a long legal battle, SF’s Supervisors have unanimously approved legislation requiring cell phone shops to warn customers of potential radiation hazards. “Hey, didn’t something like this pass last year?” Yep. Well, almost. The Board Of Supervisors approved an ordinance requiring each cell phone’s radiation absorption level (or “SAR” to be posted on the outside of its box, but that law was stifled after the CTIA Wireless Association filed a lawsuit against the city. These ratings being posted everywhere, they suggested, would just confuse consumers into thinking that certain phones were proven to be more dangerous than others. San Francisco Passes Law Requiring Radiation Warnings For Cell Phones Talk about nannyism.