Update: Apparently PADI in the new year will require all instructors and Divemasters to have one of these gizmos. And apparently they cost about $30. How may PADI instructors are there in the world? Well thousands for sure.
Seriously with everyone using dive computers do you think anyone would buy this eRDP? Perhaps it can be used for planning surface intervals?
And for the Palm Pilot, their portable dive log. I don’t think there are many Palm Pilots being sold any more though?