Of all of the recent technological developments that have expanded the surveillance capabilities of law enforcement agencies at the expense of individual privacy, perhaps the most powerful is cell ...

LONDON — Smartphones are useful tools for everyday life, but they’re privy to nearly everything about you, including all the places you’ve been — if you let them. When you use a map app to find the ...

Today, as millions of Americans flock to the malls in pursuit of Black Friday deals, some of those malls will be tracking customers by their cellphone signals. The technology comes from U.K.-based ...