I tried. It's not helpful. To get the photo in Eye-Fi card, you have to manually open a desult picture restored in the card, and it will open it's wifi signal. And then you use your computer or smartphone or tablet to access that wifi. Since you can not get access to multiple wifi, so you can only link to one eye-fi card at a time. Is useful for sharing a group of photos to a smartphone, etc. But it can be really annoying if you have to get photos from 40 or so cameras...It's easiler to the cards out of the camera...or to use usb hubs.