This CompactFlash GPS module is currently under development by Casio in Japan.
All function keys are accessible.
Case Ricky says that since he couldn't find a case that embodied all the features he wanted, so he finally designed his own. He also says that he is making them available for sale. Click on the case to visit Ricky's home page. May. I still continual to use this case almost daily. It's called a Boostaroo .