Source: http://gizmodo.com/add-your-own-wireless-capability-to-your-dslr-and-save-1450197939
Camera makers have been extremely stubborn about adding Wifi to their DSLR's, but you add your own wireless capability to your photo rig with the Toshiba Flash Air 8GB SD Memory Card. It's about as elegant as a third-party solution to a first-party problem gets, and it's cheap. I always keep one in my memory card arsenal for when the need arises. $26. [eBay]