Although it's very tempting to build highly integrated hardware extensions for the very sexy devices that apple makes there is a better way to go about building

Although it's very tempting to build highly integrated hardware extensions for the very sexy devices that apple makes there is a better way to go about building specialty hardware. Build for the wireless LAN. Adding a webserver and wifi interface to even a modestly sized hardware device is cheap and getting cheaper. Open Protocols win in the long term. Note that this means you should be able to reach most of the app phones on the market, and not be stuck with Vendor A's weird policy bugs.