Limiting access to specific trusted device network

[Scrumpy]

Looking to see what if any solution there is to making my trusted device network only allow certain devices.
For example trusted person one connects safely while another guest comes over and is unable to connect to the same network and is forced to use the guest network. iPhones for example can share passwords over airdrop. This would enable trusted person one to share the password to the other device without knowing the password.

[axsdenied]

Just to clarify, I'm assuming you mean wireless access, via an access point.  Physical ethernet ports in a house would be a different conversation.

Best thing to do would actually not let ANY guest on your primary trusted network.  Anything else and it's no longer "trusted". They should be segregated to a guest network.  I.e. my mom is not on my trusted network :)