I own KS Technologies, a company specializing in connecting hardware accessories with mobile devices. On staff, we have engineers with expertise in iOS, Android, and Win8. We are Apple MFi certified, and I have personal experience with 30-pin connector, Lightning, Classic Bluetooth, and Bluetooth Low Energy hardware and app development on iOS.
My current personal interest is in wirelessly connecting sensor technologies to iOS and pushing that data to the cloud. You can connect with me on Twitter as well.