Startup Idea: Universal Device Testing Application

Startup idea to develop a universal testing software that can read and verify inputs from all connected devices like mice, controllers, keyboards, joysticks, etc. This can be useful for identifying and confirming device faults.

Testing inputs of a device, such as if you think you have a faulty mouse, to test your scroll wheel or extra buttons and have a program read back your inputs to you so you can verify whether or not your device is working correctly, this would be a great asset if it accepted input from all connected devices, be it mice, controllers, keyboards, joysticks, etc.