I'm looking for an experienced mobile app developer to create a custom app for iOS and Android. The app will control a 2-channel Bluetooth relay primarily for home automation. Key features include: - Remote access to control the relay - User authentication (method to be discussed) Ideal skills and experience: - Proficiency in Bluetooth connectivity - Experience in developing cross-platform mobile applications - Strong background in implementing secure authentication methods - Familiarity with home automation systems Please provide examples of similar work done.