

I assume it’s possible to disable Wi-Fi in your home and still find devices with their own internet access within a certain distance to locate any phones or tablets they might have acquired and brought home
Limiting access to the internet
Wi-Fi - just unplug the Wi-Fi router. When I was a teen I had friends who would always disconnect from games at certain times. Their parents would turn off the Wi-Fi and if my friends turned it back on their parents would take it to their bedroom with them.
Phones / Tablets - What child under 16 is on their own phone plan? I would be surprised if the mobile providers don’t have controls where you can turn the data off.
Other people’s Wi-Fi / hotspots - I can’t think of a way to stop this












If you enjoy it there is another similar book by the same author.
https://en.wikipedia.org/wiki/The_Defenders_(short_story)
Edit - looks like both are available in the standardebooks Phillip K Dick Short Stories ebook
https://standardebooks.org/ebooks/philip-k-dick/short-fiction