Why would a thermometer need to connect to the Internet in the first place? It is absolutely unnecessary. The software could be installed on a server in a local

Why would a thermometer need to connect to the Internet in the first place? It is absolutely unnecessary. The software could be installed on a server in a local network or even inside the thermometer itself. Seriously? This is not obvious? What's the upper bound on the number of aquariums that a large facility might have as decor, decorative dividers, etc? 10? 50? 200? More? At a commercial scale having people go to each one is no more viable than Google using web managed network switches would be, or than using individual residential thermostats in a large office building. It might be possible, but it would be slow and error prone. Installing an in house server would be no better, but for different reasons of getting IT involved either for the server or for local software on a PC (locked down possibly and unable to install or run unrecognized apps). "Hi, this is Bob in maintenance, we'd like to install some software that will scan the network for" "NO." "But the fish!" "NO." For that matter had these been properly segregated on an "IoT" network neither of those would have worked well anyway. If you're handling financial data like that in a regulated environment, nothing from the IoT network should be able to reach to protected systems. There's a case for the protected network to be able to reach to IoT, but there are also reasons to not allow it. Frankly, having devices like that able to reach out to a cloud management system makes a lot of sense for both the client and vendor (subscriptions, lock-in, etc). The problem is allowing them on a supposedly secure network. Edit: added "residential thermostats" because it seems more appropriate here than my initial example