What they've done is take some flash memory, put it into a pocket-friendly device, and added Wi-Fi connectivity. What you get is something about the same size as a (slim) smartphone that can expand the storage of your iPhone, iPad, or iPod touch by 16GB or 32GB. And it does this through a secure Wi-Fi connection. And it can do this with up to three iDevices simultaneously.
You access this additional storage through the free app, which you can get through the Apple App Store. The app even comes with a built-in music player, photo view, and video player, so you don't have to shift between apps to enjoy your content. Pretty darn slick!
For now, the Wi-Drive is only for Apple iDevices, but Kingston has plans to expand support to including other platforms like Google Android. We also hear that they're working on integrated Dropbox support too. The 16GB model has an MSRP of $129.99, while the 32GB is $174.99.