It will soon be feasible to record and store everything everyone says or does

Data Storage Could Expand Reach of Surveillance
SCOTT SHANE

John Villasenor, an electrical engineer at the University of California, Los Angeles, studied the plummeting cost of computer data storage and reached an astonishing conclusion: It will soon be technically feasible and affordable to record and store everything that can be recorded about what everyone in a country says or does.

And there is plenty of data to store. The average person today leaves an electronic trail unimaginable 20 years ago — visiting Web sites, sending e-mails and text messages, using credit cards, passing before a proliferating network of public and private video cameras and carrying a cellphone that reports a person’s location every minute of the day.

Mr. Villasenor, also a senior fellow at the Brookings Institution, estimates that to store the audio from telephone calls made by an average person in the course of a year would require about 3.3 gigabytes and cost just 17 cents to store, a price that is expected to fall to 2 cents by 2015. Tracking a person’s movements for a year, collected from their cellphone, would take so little space as to carry a trivial cost. Storing video takes far more space, but the price is dropping so steadily that storing millions of hours of material will not be a problem soon. Read more >>