Is WiFi on the F800EXR of any use?

Lord -- I don't want it on the whole Internet -- just able to work wirelessly with a machine that's on a local wireless router or that has its own wireless. The card mentioned here: http://www.dpreview.com/news/2013/01/25/LZeal-releases-ezShare-WiFi-SD-card suggests such an ability; my sense was that its chief difference from others is that it has an on/off switch for the wifi. Is this not so?

--
depscribe
some pictures: http://www.flickr.com/photos/depscribe/collections/