Zoom Control Device for iOS/Android

I'm in need of a device that can control the zoom functionality of both Android and iOS cameras. The device should meet the following specifications:

- **Bluetooth Connectivity**: It should be able to connect to smartphones via Bluetooth.
- **Pressure Sensitive Zoom Buttons**: The zoom control buttons should be pressure sensitive, enabling precise and responsive zoom adjustments.
- **Additional Functionalities**: This device should not be limited to just zoom control. I also require it to have functionality for shutter control and focus control.
- **Cross-Platform Compatibility**: The ability to seamlessly work with both Android and iOS devices is a must.

This project will require a freelancer with the following skills and experience:
- **Mobile Device Development**: Experience in creating hardware that communicates with mobile devices over Bluetooth is crucial.
- **Camera Control**: Knowledge of camera functions, especially zoom, focus, and shutter control, will be highly beneficial.
- **UI/UX Design**: An understanding of user interface design to ensure the device is intuitive and user-friendly.
- **Sensors and Electronics**: Expertise in pressure-sensitive technology is essential.

-** the product must be attached to the handle of the tripod, easy to control.**

Example product (This works only professional camera, not a phone): https://www.amazon.com/AODELAN-Camcorder-Controller-Control-Panasonic/dp/B07RLNW81F