A few Qs: hard-coding or disabling the bluetooth pin and wifi access

In our network design, we will have all fixed nodes (as routers), and many random users.

The router nodes will be mounted about 20ft up.

I notice on the tbeam, there is an additional antenna mount, is this for wifi?

ideally, I’d like people to access the webpage of the nodes broadcasting webserver, and use that for communicating.

if that is still too alpha, then connecting via bluetooth with the app but a problem is posed with the bluetooth pin being displayed 20ft up on a tiny screen.

I’m thinking for the second option, that we should just hardcode the pin.

Can anyone direct me to the line in the sourcecode where we could put in a static pin?

Thanks a bunch,