Sophos Naked Security – In May 2013, retailer Nordstrom said that yes, it was sniffing customers’ WiFi to track their movement through 17 US stores.
Nordstrom was collecting anonymised, aggregate information, a spokeswoman said at the time, and wasn’t identifying personal information tied to a phone’s owner.
Therefore, Nordstrom said, it wasn’t using the WiFi data to market specific products at specific individuals.