The first step, of course, is to obtain FDA clearance, but it doesn't stop there. Designers also have to apply to the company's MFi licensing program, submit a prototype, and sign a nondisclosure agreement. It also helps if the device is small and can tie in with the iPhone, but image-obsessed Apple doesn't actually dictate device aesthetics.
All in all, some developers say getting approval from Apple is even harder than getting the OK from FDA, according to the story.
Android might be poised to overtake Apple in app downloads, but let's face it, there's just something about being in with the Mac crowd. What do you think? Is this something you would pursue for your device?