The main misuse of the product could be using the keyboard to gain an unfair advantage in a video game or using the features to cheat. There is no way for me to prevent this issue, as preventing cheating can only be done by the game developers. External tools have always been able to be dowloaded to do special programmable tasks that this keyboard could do. Other than this minor issue there are no other ethical issues that my product could possibly bring up.
Over time a product can breakdown and stop to work. Ideally I would want my product to have an infinite lifetime, but the issues that could arise if the product does breakdown can vary from issues relating to wrong inputs, lack of inputs, or more. While these would rarely cause any serious liability issues, the potential is there. The main way to prevent this besides a high quality product would be to have a software check every time the software is bootoed up. It would run backend tests to check that all the keys are working as intended.
Out of all the potential hazards this is eaily the most relevant. The product is mostly made up of plastic, and additional electrical parts. When it comes to the tiny electrical parts, those are already very recyclable. When it comes to the plastic components, the easiest fix would be to use a recyclable plastic, which is an improvement, but not completely a solution. This is because of the effects of microplastics, which break down off of any plastic over time. To minimize the microplastics produced by my product, I will ensure to choose a plastic with high elasticity to deformation, meaning it can support wear and tear more before breaking down, and high resistivity to extreme temperatures, which also cause plastic to break down. In the design of the plastic components I will try to keep the overall structure simple and solid, avoiding small intricate plastic parts. This will improve the overall quality of the build and prevent unnecessary wear and tear.