How to prevent visitors from touching your system

All systems in our house include Bluesound Nodes. We have only a few visitors so it’s not much trouble to introduce them to BluOS and Qobuz so they can choose their favorite music in whatever part of the house they happen to be in. It’s been a real pleasure to see them enjoying themselves with it.  We don’t have a dedicated listening room - we’re immersed in music all over the house, inside and out (closest neighbor is almost a mile away).

Velvet ropes. And a sacred/holy Persian rug on the floor that nobody is allowed to step on. Except you (after you bow deeply.) Have an airhorn standing by in case you see someone trying to blaspheme your system.

When expecting guests, I take that day's poop that I've picked up after walking my delightful Mitsy and instead of dropping it in the trash can, i artfully place it on top of the turntable dust cover.

Most non-audiophiles do not know that your expensive components are easily leading to expensively damaged.  Curiosity is human nature so touching is not abnormal.  So you cannot expect them to “automatically” know, you have to advise them and maybe take steps to protect your gear.