My objective was to find a way to transfer photos from my camera or SD card to my iPad. The iPad camera connection kit is the obvious choice, but none are currently available.
So I started my hunt for other options. A wireless SD card reader (like the AirStash) seemed like a possibility - but since the iPad cannot create an adhoc wifi network, I don't think it would work.
The other option was an eye-fi card. I didn't know much about them other than that they have embedded wifi. After some research and experimentation, I have the following, albeit weird, solution.
I purchased an eye-fi card and paired it with a old wireless router. In order to pair successfully, the eye-fi manager needs to be able to connect to the internet. So, I had to hook this wireless router up to my internet service first.
Then I configured the router for access on my iPad as well. Now the two devices (eye-fi card, and the iPad) can communicate through the wireless router, whether or not it is internet connected.
Then I purchased the iPad app called Shuttersnitch which has a built-in FTP server that can communicate with the eye-fi card (which essentially uses FTP to send files to your computer or a photo sharing site).
Seems excessive, but now, with the wireless router in tow, I can transfer photos to the iPad while on vacation (anywhere I can plug the router in).
Ok, I know I'm nuts.