Request for Contact Closures

I have used HogOS in corporate, trade shows, theatre, theme parks, architectural, and concerts. A consistent feature I've needed is a simple contact closure trigger. With the command keys so flexible, these would be even more useful if a hardware solution (widget?) is developed to allow external triggers. 

Several times a year, I have a project where its told to me in prep that a client or performer or external device will need to trigger a cue or light via a button, foot pedal, motion sensor, etc. In every case, I have to specify a different console. 

Thanks.