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Updated from 9:59 a.m. EDT

Two significant hands-free laws went into effect July 1.

In California, according to the Department of Motor Vehicles, the law prohibits all drivers from using a hand-held wireless telephone while operating a motor vehicle; motorists 18 and older may use a "hands-free device." In the state of Washington, the law is similar, prohibiting the use of a wireless device such as a cell phone being held to your ear while you are driving.

Because of these new laws, there may be a trading opportunity with the companies that make hands-free headsets.

Unfortunately, you can't invest in Aliph, maker of the stylish Bluetooth Jawbone headsets, although two venture capital companies, Sequoia Capital and Khosla Ventures, own parts of the company. But plenty of other companies make headsets, including


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To read more and to find out how to play hands-free cell-phone laws, please click here.

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