@ZenHeathen @TerryHancock @moira @blogdiva Just never let it connect to your network:
* Don't give it your WiFi SSID/PW
* Don't hook it to ethernet
* Don't talk to it with Bluetooth
If it insists on trying to find open networks in your area (there are reports that some do this) then open it up and remove the WiFi antenna.
It's possible to buy commercial monitors - large screens such as are used in stores & venues that don't have all this spy-fi, but they're much more expensive.