Many parents would love to be able to give their teenagers a cell phone that couldn’t be used while driving. Now some inventors say they have come up with ways to make that possible, but they appear to be relying on wishful thinking. One product to hit the market, $10-a-month software by Dallas-based WQN, can disable a cell phone while its owner is driving. It uses GPS technology, which can tell how fast a person is traveling. But it can’t know whether the person is driving — and therefore it can needlessly lock a phone.
