CNBC's Courtney Reagan reports some retailers are using shoppers' Wi-Fi phone signals to trace movements around their stores in an effort to gather data on how best to layout or display products.
Gen. Michael Hayden, Chertoff Group, discusses the problem of protecting data collection from giant telecom companies, while addressing national security concerns.
Nascar CMO Steve Phelps discusses whether real-time analysis of social media draws big brands to advertise in car racing.
Arnab Gupta, Opera Solutions CEO, explains how he saves companies money by putting big data to work.
Dave Barnes, UPS chief information officer, explains how and why his company gathers every piece of information possible on every package it handles.
Big data "visionary" and Harvard professor Thomas Davenport discusses the explosion in analytics and how it helps investors and businesses adapt.