Works well if the hints in the SD cards leaflet are followed. People who dont get a connection probably forgot to switch off stand-by in the camera - in stand-by the card is not powered. Big plus: Unlike the Eye-Fi all data stays local, no external accounts or similar rubbish required. Would rate it five stars if the card would book into the local WLAN as an ordinary client and and a full data download (all pictures at once) in FTP style were possible.
Pidi Rotti about Wi-Fi SD, v1.9