I use the eye-fi card and have it set up two ways. (I'm using a K7, but that doesn't matter) For one set up, I am shooting RAW+JPG, with the JPG at its smallest. I use the small JPG to keep the transfers as fast as possible. The JPG is automatically transferred to my Nexxus tablet so I can see my photo on a 10 inch screen while I'm shooting. Takes just seconds. There is a free app that will allow you to transfer to your phone too. What's happening is the wifi card sets up it's own ad hoc network. If you're at home, near your wireless network, it will use that for faster transfer. This is really useful for composition when shooting in the field.
The other set up is on my home pc, where the photos transfer wirelessly into a folder that Lightroom monitors. Then LIghtroom automatically displays the latest shot (RAW) on my monitor. The EyeFi card comes with software that will transfer and display, but I like the instant editing in LR and that's where I'm going with the photo anyway. The software installation can be a little balky, I ended up chatting online with their tech folks (who were very helpful) to get it set up.
Other software is more elegant, but this is a cheap and doable workflow for hobbyists like me.
Herb Wilburn
https://www.flickr.com/photos/hwilburn/