Have you ever wondered what the world would look like if invisible radio signals — such as those from Wi-Fi antennas — could actually be seen? Apparently, someone else did, and the results are somewhat creepy.
Big Brother is watching you, and he wants to know if you prefer Ralph Lauren over Tommy Hilfiger. According to the New York Times, Nordstrom recently shuttered a program that tracked the movements of customers throughout its stores by using the Wi-Fi receptors on smartphones like the iPhone, prompting yet another debate in the changing nature of privacy in a digital world. Nordstrom may have ceased this practice, but according to the Times, it's not the only store getting in on the action.