I am working on an iPhone app where I need to make 2 iPhones start a task at the sometime. But the 2 iPhones are out of sync by a 'second' when I compare the clock. So I may not be able to use the nsdate reliably... is there any other way to get a common time between 2 devices or make them start a task at the same time without using bluetooth or peer to peer network?
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