The Really Smart Phone

WSJ Online - Researchers are harvesting a wealth of intimate detail from our cellphone data, uncovering the hidden patterns of our social lives, travels, risk of disease—even our political views.

'Phones can know,' says an MIT researcher. 'People can get this god's-eye view of human behavior.'

Apple and Google may be intensifying privacy concerns by tracking where and when people use their mobile phones—but the true future of consumer surveillance is taking shape inside the cellphones at a weather-stained apartment complex in Cambridge, Mass. Read more.