Ive been getting a lot of questions in regards to the wireless transmitter for the Canon 6D which I demonstrated in the EOS App How to Video. Currently, there are only a handful of work arounds if you do not have a 6D. For Canon Cameras, the Cam Ranger is an attractive alternative, however, its a bit spendy.
If you are a Nikon user, you will be happy to know that you can add Wifi Tetherless shooting to your cameras with the addition of either the WU1A or WU1B, for about $55-60.
I just got my WU1B for my D600 and should have some fun videos coming this week showing ways to use it.