My flatmates are connecting to my google nest speaker as we share the same wifi and annoying me, i turned off the option let others cast but still they are easily connecting i don't know why.
Anyone on the same wifi network can see your Nest speakers/Hubs. You could setup a travel router, and hook your phone and Nest devices to that network, and not share the password, but they will still be able to use voice to control the speakers.
They are used mainly for inside hotels, but the also work for communal lining situations like college dorms. Heres a list of top rated ones. They may differ depending on where you live.
I wanted to check in and see if you are still in need of any help. Please let me know, as I would be happy to assist, and answer any questions you may have.
Just bumping this up to make sure that you've seen our responses. I'll lock this thread if we won't hear from you in 24 hours. Feel free to create a new one if you have more questions or have other concerns in the future.
