I use a first generation HomePod at work. Anyone who is one the same wifi (we have one for employees and one for clients), can control my HomePod and what I'm playing shows up on their phone. Is there anyway to avoid this? No one cares what I'm listening to, but people have accidentally stopped play or adjusted volume. I thought if it was my phone used to set up the HomePod, it was the only one that could control it remotely.