iOS 8 will generate random MAC addresses so stores can’t track you

Apple’s solution, as discovered by a programmer, is for iOS 8, the new operating system for iPhones which will be out later this year, to generate a random MAC addresses while scanning for networks. That means that companies and agencies that collect such information will not necessarily know when the same device i.e., person visits a store twice, or that the same device pops up in stores across the country or the world, suggesting a much-travelled owner.

via A tiny technical change in iOS 8 could stop marketers spying on you – Quartz.