I'm seeking some help or guidance. I'm attempting to write an app for private use that listens for HID events from a RF reader and responds. I have a functional app, which has to be launched via sudo, to be able to execute IOHIDManagerOpen(manager, IOOptionBits(kIOHIDOptionsTypeSeizeDevice)) correctly. I'm trying to modify this app, now, to use SMAppService and bypass the need for terminal and sudo, but I'm getting confused at what parts of my code need to be embedded into the helper and how to manage communications between the different components. I make it to step 8 in https://developer.apple.com/forums/thread/721737 before I start getting lost. Does anyone know of a functional, SIMPLE, sample app I could take a look at, or a good guide that lays out all parts of an example? Everything I've found gives the bones but no meat.