A original Ricoh GR Digital, I assume? I doubt it. The (younger) GX100 seems to be unable to supply enough power for my older Eye-Fi Pro cards (unless their failure is due to the braindead software of the latter). The Transcend WifiSD card does work, though - but going by its load on my batteries it seems to be lower power, and at least in webserver mode it is entirely camera agnostic. As my Eye-Fi cards already are SDHC, younger than the plain SD Eye-Fi cards you'd need for the GR, chances are that the latter are a even harder load on the power supply. That said, 2GB and smaller Eye-Fi cards are a rare sight on ebay, but tend to be very cheap whenever they turn up, so it might be worth while an attempt if an opportunity arises...